I will do that

OK will try that thanks for the information :) been a big help

And do you need them on all four corners?

OK do you need to put them on turn signal and tail light wires?

What's a dropper resistor?

I am using LED bulbs

Yes I used the tester on the sockets. No plug for trailer and when running lights are off and you step on the brake all lights except for headlights come on and when you turn left turn signal on all running lights flash like a turn signal. And inside lights, clearance lights, side markers, and...

On the turn signal switch yes. I unplugged the harness that runs the lights on the bed and the harnesses that runs the lights on the front of the truck I have it isolated to the cab I've put a used headlight switch on thinking that was it but I guess it could be bad too. I'm hoping for some...

When I turn the left turn signal on or stap on the brake cab lights and side markers lights flash. I need help please I can not find the problem. I've changed all bulb sockets.

Hi everyone my name is Chris :)