What type of problems are you having and do you have a test light or multi-meter?
The first thing that I would like to have you check is the #1 fuse in the fuse block inside of your truck.
This fuse needs to have battery power going through it all of the time.
If this fuse is good, we will then need to remove the headlight switch for the next testing steps...
Please let me know what you find...Thanks, Josh
Okay. What you need to do is remove the headlight switch from the dash. Once the headlight switch is out, first test to be sure that there is power at the (pink with red tracer) wire.
If power is present, turn the headlight switch on and check for power on the black with a yellow tracer. If there is no power coming out of the headlight switch on this wire, the headlight switch is no good....