Troubleshooting Turn Signals and Brake Lights Not Working With Running Lights On

Question

Question:

With tail lights off the turn signals and brake lights work. If the tail lights are on the other functions quit working

asked by: Colt

0

Expert Reply:

Based on what you are describing it sounds like you have an insufficient ground. Make sure your ground connection is secure on a clean, bare-metal surface. This could be on the vehicle side or the trailer side so I would make sure to check ground connections on both.

I have attached a helpful article on troubleshooting 4-way wiring for your reference.

expert reply by: Robin H

0

Answer 1

For Optronics trailer light #STL23RB you can use wiring harness #ALEDRST1B. This harness comes with a load resistor built in to prevent hyper flashing. Hyper flashing is more common when putting LED lights on vehicles and not normally and issue on…

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Answer 2

I've never heard of an actual third brake light connector on a camper shell to plug in on a truck and we don't carry any parts to do that. The light generally needs to be hardwired into the truck's brake light circuit. The issue with this…

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Answer 3

I did some checking and the hub/drum we offer that will work for you is the part #8-430-5UC3. This uses the same bearings as the 8-415 and will be an exact fit aside from the fact this is a non-ABS setup and the 8-415 came in an ABS setup and non-ABS…

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Answer 4

If you are needing the hub and drum assembly then you will want to go with the Dexter Trailer Hub and Drum Assembly #8-201-5UC3-EZ but if you are just looking for an idler hub then you will want part #8-213-5UC1 instead. These come with the correct…

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Answer 5

I would be happy to help you set up your 2022 Toyota Highlander to haul your new travel trailer. The wiring harness you currently have controls your trailer's lighting functions only. You do not need to rewire your Toyota you just need another…

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Answer 6

If the trailer wheels scrubbed (dragged and scrapped the ground instead of rolling) when jack knifed then it could have thrown something out of alignment or damaged something. First, inspect the suspension. Look for any elongated holes where…

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Answer 7

Since you have a wheelbase/axle spacing of 38 inches the correct hanger kit for slipper springs would be the part #HAP-105-205-01. And then for a 7k trailer axle the u-bolt kit you'd want would be the part #APUBR-8. I attached the diagram to use…

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Answer 8

If your vehicle has a factory brake controller plug, you can simply use the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers – Ford, Item #3034-P, which will connect to the vehicle plug and the brake controller. On the new E-450…

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Answer 9

To see all of the correct wheel and tire combos you'd need check out the link I attached. The option I would recommend is the part #TA43RR which is a Load Range C tire size ST175/80R13 mounted on a white spoke wheel with a bolt pattern of 5 on…

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Answer 10

I would love to help you upgrade the suspension on your Twilight 2800 travel trailer. The MORryde Rubber Equalizers for Tandem Axle Trailers #MR87ZR that you referenced are a great solution but we do need to double check a few things. First is that…

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Answer 11

When installing/adjusting the Solera RV Slide-Out Awning #LCV000163285 tension is applied by rotating the awning roller 14 times. This should apply the needed spring tension so that the fabric doesn't billow in the wind or leave enough slack that…

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Answer 12

The manual lockout on your Atwood 85778 surge brake coupler is there so that you can back up the trailer without the brakes locking up on you. Yes you can safely tow your trailer with the broken manual lockout, you just have to make sure you…

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Troubleshooting Turn Signals and Brake Lights Not Working With Running Lights On

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