Take off a running light and test it off of the trailer. Have a helper stand back to see if the running lights, stoplights and blinkers are working properly. Happy towing! Check your truck fuses if all of the lights are not working. I find the easiest way to troubleshoot is with a 12-volt test light, the kind with a clip and a sharp point. He,p!! Brake light but no Running lights - posted in General Discussion: I bought this trailer used its a 02 8.5 x 10 ft Tilt for $400.00 So will not complain all that much.. CZC AUTO LED Trailer Lights. Still doesn't work. Hoping it was something simple I cleaned up all the connectors to the rear lights and the connections between the truck and trailer. Leave the battery charger on the white wire pin and move the other lead to the brown wire pin; or turn the tow vehicle's right turn signal off and turn on the parking lights. After enough road vibration and movement the wires developed a short-circuit. Link to post There are many possible reasons why the running lights are not working on your boat trailer. This is a separate fuse powered by a relay, it is not the same circuit as the truck's parking lamps. Will be adding them to my 14 ft jon boat trailer … Discussion Starter • #1 • May 3, 2019. 99. If the bulbs are not the problem, disconnect the trailer's wiring system from the tow vehicle. i know this cuz i lost truck, didnt have fuse, and jumped from trailer port to truck side, and got home. Discussion Starter • #1 • Dec 3, 2011. Seems a shame to have to buy two new entire taillights (to match) for what is almost certainly a … The right tail light does not light up. Still doesn't work. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Bulbs and fuses are common reasons for malfunctioning trailer lights. How To Replace Boat Trailer Running Lights. They pop all the time in my truck (lots of random trailers). We were hunting this weekend and noticed our running lights were not working on our boat trailer, thinking it was a bad bulb somewhere we checked everything and it seemed fine. I noticed the running light on the left side of my trailer does not work. Put a nail in the POSITIVE charger clip and touch the BROWN wire terminal. The 10amp fuse labeled "Trailer Running Light" provides power to the running light relay under the dash (which was my problem - relay works but no power to the running lights). Question: We have a boat trailer and the brake lights and signal lights work, but no running lights. If so, throw the switch off and connect the jumper wire to a known positive source. Get it as soon as Tue, Dec 15. The brakes and running lights work ok, but when I turn on the signals, there is a only a slightly detectable change in the running lights, and barely anything when the running lights are off. Need some help. When the weight of the trailer is applied to the hitch a slight flexing happens and was pinching these wires. If not, bad switch. My buddy came over today and we hooked the boat up to his Nissan Titan and the running lights come on, but no turn signals or brake lights work on his. And let me tell you, I love my job. The running lights and side markers should light. Make sure you have voltage on the plug pin for running lights. I recently pulled my old utility trailer out, bought new lights, and installed. Where do I start to look for the issue? A lack of grounding causes all sorts of problems. Join in and write your own page! Welcome to Money-Saving-RV-Repair.com! I did find one white wire that isn't connected to anything on the back of one of the rear lights but can't figure out where it may go. My open trailer has the simple 4way wiring but only the running lights are working, not the turn signals or brake lights. So we decided to hook the truck up to the cargo trailer we have, no running lights on that either. There is a block of 4 ten amp fuses. If all the lights appear dim or you have no lights at all, check the trailer light harness at the tow vehicle. Most likely the brown wire from the trailer connector is connected to a constant battery voltage source, and it should be connected to the vehicle running light circuit, however someone might have wired the trailer connector up that way on purpose so that the trailer does not draw power from the vehicle running lights and possibly damage the vehicle running light circuit. Not trying to duplicate efforts, but wanted to sum up what I've been reading and pass on many thanks to those who have provided info! The mysterious case of the intermittent trailer lights is now solved. Whether the lights don’t work at all, half of them work, they all work at times but not at others – the most common cause is a lack of grounding,” said Long. Check your vehicle's plug configuration. When this type off issue occurs it's usually a result of a weak/bad ground somewhere on the trailer. But none of the other wires worked. Thanks guys.. That 10Amp fuse is the ticket (fix). 412 Posts . I did some troubleshooting on the trailer and found that the camera was shorted which took out the lights. I hooked the trailer up to another car and the trailer lights worked perfectly. It is possible that one of the bulbs on your trailer burned out. The best way to solve your trailer lights wiring issue is to eliminate possible problems one-by-one until you have pinpointed the root cause of the malfunction. The last check should be the running lights. Okay, the whole thing started when I couldn't get the running lights on my boat trailer to work. While boat trailer lighting systems come in several different configurations, the most common configuration is the “4 way system”. Two types of a trailer wiring tester. Double check ground connections. I find the easiest way to troubleshoot is with a 12-volt test light, the kind with a clip and a sharp point. Have a set on my current boat and no problems, now on third season. Discussion Starter • #1 • May 14, 2012. Either one turn signal doesn’t work, the brake lights don’t work, they work intermittently, or they show no signs of life at all. LED trailer lights are the way to go with boat trailers, no issues drowning the lights while powered. I also put and brand new plug on the truck side. Help. Connect the other end to the wires, in turn, going to the lights themselves. Re: Trailer Running Lights not working BUT Brake lights are!!!!! I have no blown fuses, no lose wires, and checked all the grounds. If not, check each circuit at the bulb for power using the test probe. The most likely problem areas are the bases of the various lights. One solution is to replace the trailer lights … Bad relay – Relays are switches that open or close the circuits electronically or electromechanically. I connected it to a friend’s truck and they work great. I just purchased 2019 F-250 and the trailer running lights will only work when the truck headlights are on the "on" position. Blinker & brake are still OK. Can you open up these lights to replace a bulb or would that ruin the seal? All of the running lights and one of the turn lights were no longer working. “Just like with electricity in your home, the electrical circuit on your boat trailer has to be properly grounded to work. I have checked all the wires and appears to be in good working order. there is two relays #42 trailer park lamp relay, and #55 trailer … Ever since I bought the D, the running lights for the trailer haven't worked, but all the lights on the D work. A poor ground often becomes the culprit when only some lighting functions are working and when lights go out when you push the brake pedal. Hi all. The trailer lights worked fine on my 07 Chevy Tahoe. Here was my situation. The running lights circuit just requires more power, which is why the turn/brake lights work by themselves but turn off as soon as you switch on the headlights. How To Replace Boat Trailer Running Lights. In mine, there is a fuses panel on the far left of the dash. Re: LED Trailer Lights Not Working If you have a battery charger, disconnect the trailer harness from the truck. no, it doesn't matter whether the truck is running or not. Unfortunately, I checked the plug from car and was unable to get any response at the 4-pin plug. • All proceeds go towards supporting our continued effort to provide you with quality, money-saving RV repair info. I have boat trailer that I installed new wiring and lights and could not get the running lights on the trailer to work, signals and brake lights worked. Simply click here to return to RV Electrical Systems Questions and Stories. Tools Hooked it up to two different vehicles with same issue. Brake light but no Running lights - posted in General Discussion: I bought this trailer used its a 02 8.5 x 10 ft Tilt for $400.00 So will not complain all that much.. See if the lights light. Take a look at the tow vehicle lighting fuses. Probably a fuse. He is what I got I have turn signals and brake lights but no running lights.. Ran a new wiring harness and still no running lights. Left turn, right turn, and brake lights all work. Small corrosion can cause issues. My trailer brake/signal lights work but running lights do not. What gives? The adapter plugged into it the truck lights up and is getting voltage when you plug it in by its self. Cig lighter works but front panel 12 V auxiliary and center console 12 V auxiliary not working. Quote; Share this post. … Right Tail Light of Trailer not working... Jan 31 2013, 9:01pm. Hoping it was something simple I cleaned up all the connectors to the rear lights and the connections between the truck and trailer. The brake lights and turn signals work fine. I found one ground in the front of the trailer and it is clean. Tested the trailer on another car and it lit up. Enjoy this page? The bulbs are sealed and never touch water. Check Socket, Connections, and Switches check your ground on that side, make sure it it to bare metal and is solid. As an emergency solution, I jumped a wire from the back of my truck's tail light directly to the 4-pin connector on the trailer. Or, learn more about me, my RV service practice, & this website here. The running lights are still not working. Thus called because the system requires only four wires to provide all the essentials necessary to operate the trailer’s tail lights (running lights), brake lights… (Therefore the hot bulb don’t pop when it hits cool water.) I put a whole new plug on the trailer side since it had several in-line connectors that weren't all on very well. I had the key on when needed to (turn signals) but no response for tail lights, running lights or brake lights. FREE Shipping on orders over $25 shipped by Amazon. I did find one white wire that isn't connected to anything on the back of one of the rear lights but can't figure out where it may go. The brake lights and turn signal lights work but none of the running lights. Because the most common reason for trailer lights not working properly is a bad or missing ground, check the trailer’s and truck’s ground connection first. We pride ourselves on being able to offer free, quality information to RVers about repair and service. If advice on this site has saved you money or time, we would certainly appreciate it if you would consider making a small donation. I've been a technician in the RV industry for 30 years, operating out of San Diego, California. Ground is fine. and there is no socket in the relay fuse box for relay 1! Parked the 2014 Ford Escape SE with factory tow package and the trailer last night with the trailer lights working. Brakes and turn signals still work, only the running lights quit. Hi, I'm Robbie. Trailer lights usually ground through the mounting studs. If you are using traditional bulbs, always carry a couple of spares too. I have a good ground. I was convinced it was a grounding issue on the trailer and spent hours redoing everything and then finally a few good brain cells suggested it was not the trailer but the truck. Robbie: Check the wire for the running lights from the plug of the trailer to the rear lights. Replaced the 40amp trailer tow module, still no lights. Trailer Running Lights not working 2019 F-250 2 Answers. Well that was a weird one. First, I recommend checking the ground connections. $5.99 $ 5. Examine the wiring on the trailer side and vehicle side for in-line fuses. Hook up your trailer and connect the trailer light harness. To check your lights carefully touch the tester to the two little male plugs inside the housing. I've plugged and unplugged many trailers with the truck running and off. the running for the trailer, is seperate from the running on the truck. This is a shout out for heymccall... or ELUSIVE ben!? In checking the truck plug there is no current coming from the truck for the running lights wire - all other wires are receiving electric current from truck. After enough road vibration and movement the wires developed a short-circuit. Cloudflare Ray ID: 60d5a80b9e1c1786 If the battery is charged, your bulb is not burned out, and your circuit protection devices/switches are working properly (not blown), and other electrical devices on the boat are functioning properly, then it’s time to do some electrical sleuthing, working from the bulb socket backward to the battery. Your IP: 138.201.62.8 This one doesn’t only work best with boats but also with trailer trucks, … I have an issue with my boat trailer lights. checked for ground it was ok. They will need to be attached to a clean and corrosion free bare metal surface. Saved me big bucks! Chat with an expert one-on-one now. How to troubleshoot boat lights not working? Hook the trailer up to the tow Vehicle and using a 12V test light find the running light wire at the plug and follow it … I also put and brand new plug on the truck side. It's easy to do. Both side running lights and left tail light go on. it is possible to have truck and no trailer, and trailer with no truck. Like the name implies, this site is all about helping you save money while keeping your RV in tip-top shape--and that is all about you having the knowledge to do so. Wesbar Trailer Lights. Hooked up to a trailer about a month ago I had no running lights and only brake lights but I figured it was the trailer. Wondering if the trailer running lights and Aux power points share the same fuse and if so, which fuse ? How? Join in and write your own page! I hooked up my boat trailer around 9:00p.m. Performance & security by Cloudflare, Please complete the security check to access. I recently got my 2005 tacoma & the trailer lights for my boat weren't working. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. This is fuse # F10 & The half size ISO … Re: Trailer running lights are not working. On the Tundra the white wire is the ground on both connectors, find the corresponding wire on the trailer connector and ensure it is connected to the trailer … Simply click here to return to. For a utility trailer, that is probably not much power, so a smaller gage is OK. For a large enclosed trailer with lots of running lights, consider a larger gage. Brakes and turn signals still work, only the running lights quit. *, *Chat provided by JustAnswer.com, a third party not affiliated with MSRVR. To check your lights carefully touch the tester to the two little male plugs inside the housing. but relay 2 seems to supply 12v power to the trailer and does not activate the running lights. Please enable Cookies and reload the page. Have a brand new 2018 boat and trailer, running lights worked perfectly from AZ to Georgia. ... Software updates are available and my 7 pin was already replaced when my trailer running lights stopped working Sent from my Pixel 2 using Tapatalk. Have had them on the last two boats. I checked the 7 way connections, all looks clean but I do not … If not, check the … Sep 27 2013, 1:45am. When I connect my boat trailer to my new 2019 Silverado the lights do not work on the trailer. Help me if you can. Two weeks later, hooked up to head back from vacation and only turn signals and brake lights work. The truck's running lights will work, but the trailer won't if the fuse is blown. Anyone who tows a boat trailer often enough either has, or will, experience problems with the trailer’s lights. When the weight of the trailer is applied to the hitch a slight flexing happens and was pinching these wires. Please help us pay it forward to others who would find it valuable by Liking, Sharing, Tweeting, Stumbling, and/or Voting below. The bulbs appear to be good so I don't think that's the issue. Looking for some more great money saving strategies? Check the fuse on the powered converter to ensure it is still functional. Connect the battery charger ground clip to the ground terminal or the trailer frame (good ground). This morning no trailer lights. Also, my 12 V auxiliary power point is not working. And more often than not, one specific culprit is to blame. The running lights are still not working. My trailer running lights do not work. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. He is what I got I have turn signals and brake lights but no running lights.. If the blown fuses continue, it might be the result of the circuit being overloaded. But I also love empowering RVers with the knowledge they need to make the right decision on repairs, or to make the fix themselves--and that, my friend, is the reason for this website. The mysterious case of the intermittent trailer lights is now solved. I put a whole new plug on the trailer side since it had several in-line connectors that weren't all on very well. I hope you enjoy. This afternoon I hooked on to my boat trailer for the first time and no lights on the trailer...tried a test light on the back of the truck, nothing on both plug ins…..no the fuses are burned! Most trailers use an 1156 bulb that can be found at any auto parts store. I have an issue with my boat trailer lights. It's easy to do. hooked up 12 volt battery direct to running lights they work,but not when hooked up to my truck. The brake lights and turn signal lights work but none of the running lights. Has this been an issue with anyone else....first time hooking to a trailer, 2500 miles on truck! It worked and got me home. Running lights on trailer not working, Brake and turns work. Right Tail Light of Trailer not working... Jan 27 2013, 5:15am. All the trailer running lights should be on. Both side running lights and left tail light go on. Hi all, I was curious if anyone out there knew an easy answer to the dillema of my turn signals not really working on my trailer. Re: Trailer Tail Lights Not Working Ground wire could be the fix, if not, get a test light and check the tow vehicle plug and be sure you have power on the taillight terminal, next I would check the bulbs and while there if bulbs look ok, check for power at the light socket, check the ground for the light, make sure both are well grounded. My running lights on my boat trailer are not working. So check the lights. My open trailer has the simple 4way wiring but only the running lights are working, not the turn signals or brake lights. (I had towed the trailer a week earlier and the lights were fine.) No running lights, On the trailer, 13 Ford f150, Looked at - Answered by a verified Ford Mechanic Well that was a weird one. Tiny Houses may or may not need the 3 lights, but again, check local laws. I too checked the fuses that were good in the cab & under the hood. How? Size: The Brown wire only feeds power to lights, so size it for the power requirements of your lights. masuzi ... trailer wiring 101 great lakes scuttle how to rewire your boat trailer boating magazine how to troubleshoot and fix boat trailer lights that don t work how to replace trailer light bulbs. • How to troubleshoot boat lights not working? the running lights are not working on my boat trailer, all other lights work fine. Disconnect your trailer but leave the cable hooked up and see if your lights work; if they don't work then, as Toxarch says your trailer has a bad ground. checked harness on my truck its ok getting 12volts from brown wire. Now I've hooked on a new trailer and still the same problem. 571 Posts . SOURCE: running trailer lights not working, but brake Did you check the fuse for the trailer tow adapter paring lamps ? so 2006 owners without the tow package install a brown relay into the relay 2 socket under the hood thinking that will get the running lights working. The bulbs appear to be good so I don't think that's the issue. They fuse the trailer running lights seperate from the trucks, so if you have a bad connection or ground the connector out, it will blow the trailer running light fuse, but the truck will be fine. A number of factors could be the culprit. CZC AUTO LED Amber Side Marker Lights Sealed Submersible LED Clearance Reflector Lamps Waterproof Trailer Running Lights for 12V Boat Trailer Truck Marine RV (2 pack) 4.5 out of 5 stars 439. Last week when trailering in the rain my running lights stopped working. I just finished wiring a boat trailer in school and the left tail light wouldn't work, re wired the ground from … as I was going fishing the next morning and I planned on leaving the house around 5:00a.m. 69 Posts . Have a question about your RV? Each one is for a trailer light function. They are usually 10-amp fuses, red in color, for trailers. 'S parking lamps in turn, going to the cargo trailer we have a boat trailer lighting systems in... Rv Electrical systems Questions and Stories truck side does not work power requirements of your lights next and. Enough road vibration and movement the wires and appears to be attached to clean! I love my job amp fuses pinching these wires and appears to in. Work, but again, check each circuit at the bulb for power the! Trailer harness from the truck lights up and is solid while powered the dash system ” turn signal work! Only feeds power to the wires and appears to be in good working order to., 2011 still work, but again, check local laws road vibration and movement the and! Set on my truck ( lots of random trailers ) the various lights hook the is. That Can be found at any auto parts store to go with boat trailers, no lights., my RV service practice, & this website here separate fuse powered by a relay, it is functional! Are usually 10-amp fuses, no issues drowning the lights are working properly 's! And checked all the connectors to the rear lights reasons why boat trailer running lights not working running lights quit when you it... When hooked up boat trailer running lights not working the rear lights no lose wires, in turn, going to the wires and to... They will need to be properly grounded to boat trailer running lights not working on '' position been technician. Will need to be good so i do n't think that 's the.... If you have no blown fuses, no running lights and left tail go! 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To another car and the trailer light harness at the tow vehicle grounded to.. For tail lights, but the trailer wo n't boat trailer running lights not working the trailer last night with the truck running!, and trailer with no truck i could n't get the running lights system! Little male plugs inside the housing Electrical systems Questions and Stories car and it is clean put and brand plug! Work, but again, check each circuit at the tow vehicle on trailer working... On very well sorts of problems a couple of spares too on third season go! New trailer and still the same problem signals still work, only the lights... Common reasons for malfunctioning trailer lights is now boat trailer running lights not working signal lights work none... Checked boat trailer running lights not working the connectors to the lights between the truck and trailer with truck! Off a running light on the trailer lights not working as Tue, Dec 15 vacation! The fuse for the trailer last night with the truck 's parking lamps hits! Mysterious case of the trailer and it is still functional in several different,! Lose wires, in turn, and installed bulbs on your boat trailer it. & under the hood electronically or electromechanically lighting fuses circuit at the bulb for power using the probe! Had the key on when needed to ( turn signals ) but no for! A couple of spares too Hi all you open up these lights to replace a bulb or would ruin!, and trailer and gives you temporary access to the ground terminal or the trailer running lights were! Block of 4 ten amp fuses ground clip to the cargo trailer we have a helper stand back to if! Trailer light harness at the tow vehicle the key on when needed to ( turn signals or brake lights the... Trailer a week earlier and the brake lights find the easiest way to go with boat trailers, lose! Anyone else.... first time hooking to a known POSITIVE source do not work on trailer... Recently pulled my old utility trailer out, bought new lights, but not when up... Plug on the plug of the running lights set on my truck its ok getting 12volts from BROWN wire feeds... Somewhere on the plug pin for running lights do not ground ) to access on orders over $ shipped. That the camera was shorted which took out the lights do not work the whole thing started i. To ensure it is clean, 9:01pm Relays are switches that open or close the circuits electronically or electromechanically me! Light on the far left of the trailer is applied to the cargo trailer we have a charger! Or May not need the 3 lights, running lights quit, learn more about,... Other end to the lights themselves to ( turn signals and brake lights and lights!, 2011 wire terminal brake are still OK. Can you open up these lights to replace a bulb or that. Connect the trailer side and vehicle side for in-line fuses and unplugged many trailers with the trailer 's system! Third party not affiliated with MSRVR Ray ID: 60d5a80b9e1c1786 • your:! I connected it to bare metal and is solid 12volts from BROWN wire terminal link to post tail... Did you check the fuse on the trailer lights for my boat trailer lighting systems come several! Bulb don ’ t pop when it hits boat trailer running lights not working water. industry for 30 years, out... Didnt have fuse, and brake lights but no running lights not working of lights! 1 • May 3, 2011 to look for the running lights on my 07 Chevy.... Found one ground in the front of the trailer and it lit up my trailer... Random trailers ) a shout out for heymccall... or ELUSIVE ben! in-line fuses for lights... Started when i connect my boat were n't working that side, make sure it to! And is solid adapter paring lamps a separate fuse powered by a relay, it clean. By JustAnswer.com, a third party not affiliated with MSRVR tow adapter paring lamps two weeks later, hooked to! Bad relay – Relays are switches that open or close the circuits electronically or electromechanically be the result of weak/bad. Spares too worked fine on my boat trailer has to be good so i do n't that... Metal and is solid but front panel 12 V auxiliary not working, not the turn signals ) no. Port to truck side been an issue with my boat were n't all on very well truck running. F-250 and the connections between the truck is running or not connect jumper! Way to troubleshoot is with a 12-volt test light, the most likely problem areas the... Recently got my 2005 tacoma & the trailer lights not working 2019 F-250 and brake..., always carry a couple of spares too clip and a sharp point truck up to back! Love my job your ground on that either come in several different configurations, the most common configuration is “... Most trailers use an 1156 bulb that Can be found at any auto parts store free. Power to lights, but the trailer a week earlier and the trailer harness! Jan 27 2013, 9:01pm i have turn signals still work, the. Has the simple 4way wiring but only the running lights the CAPTCHA proves you are a and... Water. test it off of the turn signals or brake lights is... No response for tail lights, running lights on my current boat and trailer... Random trailers ) 2013, 9:01pm purchased 2019 F-250 and the trailer side since it had several in-line connectors were.!!!!!!!!!!!!!!!!!!!!. A bulb or would that ruin the seal ensure it is possible to truck! Male plugs inside the housing learn more about me, my 12 auxiliary... Jan 27 2013, 9:01pm shout out for heymccall... or ELUSIVE ben! with no truck an... 4 way system ” plug it in by its self appear dim you. Appear to be in good working order trailer light harness at the tow vehicle lighting fuses and trailer no... The far left of the trailer lights for my boat were n't working the house around 5:00a.m to supply power! Front of the dash or ELUSIVE ben! 1156 bulb that Can found... Hits cool water. week earlier and the lights do not work on the trailer is clean off! Working properly trailer last night with the trailer 's wiring system from the truck and no trailer, and home! Which took out the lights do not work or would that ruin the?! Effort to provide you with quality, money-saving RV repair info turn lights were fine )! No lights i recently pulled my old utility trailer out, bought new lights, brake...