No turn single lights on front

Fuse or relay kaput?

 

Make sure that light has good ground to steel frame rail. The hood is fiberglass and may not have a ground strap from the lights to the frame. Leds will not even come on and glow dim like a bulb will if the ground is weak.

 

Disconnect the connector to the headlight assembly/turn signal. Turn the turn signal on. Set a voltmeter to DC volts. Connect the negative lead (black) to a good ground. Then try the red lead in each of connector ends. See if any of the terminals has 12-13v.

 

Have you unplugged the harness ( Left & Right side ) under the radiator lately ?
They have a way of loosing ground with the water getting in the pins. The pins also bend and don't go where they need to be.

 

Still need to check for voltage at the harness where it connects to the headlight to see if the t.s. is getting to that point. If not then check the other end that connects to that harness. "ran power through each wire" What was the result, did the t.s. light up? What is the "node" you refer to?