TX custom led tail lights made to order

[Robznob11]

Originally Posted by Already Gone

I bought a set of your LEDs, like the pictured ones in post 21 in this thread, from a friend who got em from u but never installed them and decided to go another way for lighting. I installed the reverse boards and taillights and wow they are bright The taillights, signal lights and barke lights all work super but when I put my 4 way flashers on the taillights do not flash but fronts with normal bulbs do. I'm thinking do I need a resistor in the taillight wiring to make em work or anything else u can think of or is there something in your design that is stopping them from working. I have a 72 C10.

Sir, typically when you have leds on all 4 corners you will leed led flashers. Led flashers are polarity sensitive. I don't really like the cheap plug in ones, not even those with the ground strap. I always recommend to my customers a Grote 44010 solid state flasher. You will probably need one for turns and one for Hazard. Pull the stock flasher and use a test light to see which side has 12v then hook the red wire to it. Hook the green to the side with no voltage and black to ground. Many times the Hazzard is opposite of the turn so check them both.

One thing you can check before that is the side marker lights on the front. Gm has a brown (park wire) going to one lead and the other side is hooked to the light bulb or dark blue turnsignal wire (depending on side) that works fine for normal bulbs but won't work for leds. Unhook the wire going to the blue or light blue and ground it to the body (sidemarker bulb side not the feed) this will keep the voltage from back feeding through the system. Your markers will be park only no blink.