I installed a set of LED turn signals on each side of the trailer, so that when a car is driving alongside, and I wish to change lanes, they can see the signal.The output from the truck (2012 Dodge Ram 2500 HD Diesel) provides a turn/stop signal to each of the left and right rear lights on the trailer.I spliced into the stop/turn wires for each side, but my problem is that when I brake, the lights I added also come on. Is there a way to install a device that will only activate the added turn signals if power is NOT being sent to both lights (left and right) by the brakes?

You need the little splitter box that separates the stop and turn portion of the bulbs. I wired a Dodge before for towing and had to use the splitter box. Newer vehicles have the European style lights and they have to be split.

I think that is a great idea. How did you run the wire, did you go under the tr. does the wire show at all. I don't think you would be able to run the wire in the walls of the tr. I would like to do it myself but not sure how to run the wires.

I ran the wiring in wire loom, from the rear tail lights, to the side of the trailer, secured to the frame.

I've thought about doing something similar, BUT since a majority of other drivers ignore your turn signals anyway (other than to speed up to fill the gap you're trying to merge into) it would be a wasted effort.

I did the same thing a few years ago, but not with LEDs. I just tied into the wiring close to where the battery is on mine and they do light when I use the brakes. I don't mind that because then I know the brake lights are working!

Trailer Wiring - Added Side Turn Signals | Good Sam Community

Tom_Dee
Explorer
Apr 15, 2014
I did the same thing a few years ago, but not with LEDs. I just tied into the wiring close to where the battery is on mine and they do light when I use the brakes. I don't mind that because then I know the brake lights are working!
Michelle_S
Explorer III
Apr 15, 2014
I've thought about doing something similar, BUT since a majority of other drivers ignore your turn signals anyway (other than to speed up to fill the gap you're trying to merge into) it would be a wasted effort.
AliBaddy
Explorer
Apr 15, 2014
I ran the wiring in wire loom, from the rear tail lights, to the side of the trailer, secured to the frame.
Gray_Fox
Explorer
Apr 15, 2014
I think that is a great idea. How did you run the wire, did you go under the tr. does the wire show at all. I don't think you would be able to run the wire in the walls of the tr. I would like to do it myself but not sure how to run the wires.
remdog_1
Explorer
Apr 15, 2014
You need the little splitter box that separates the stop and turn portion of the bulbs. I wired a Dodge before for towing and had to use the splitter box. Newer vehicles have the European style lights and they have to be split.

Forum Discussion

Trailer Wiring - Added Side Turn Signals

About Fifth Wheel Group

Related Content

Turn signals

Need suggestion for trailer wiring

Turn signal not flashing

Check trailer wiring message 2014 Silverado

Cell phone signal booster