Somethings missing I think
This wire is just hanging under there and I have no idea where is goes or come from. The person that owned it before me must have done something. It is a red wire with white stripe that is spliced into the black wire and has the little blue tab on the end.
Red wire with green stripe has no power with or without switch on. Red wires with blue strips have constant power from 80 amp fuse
So I have been struggling with this issue for some time now and can't seem to figure it out. I have replaced all fuses and relays. I have replaced the headlights themselves. And the headlight switch has been replaced. What do I do now? My headlight relay doesn't click or send power to the red wire with green strip in the picture Which should supply the power to the headlight fuses and so forth why is this? There also seems to be one corner of the relay missing. What goes here and where does that wire come from? If someone could post pictures of the underside of their fuse box so that I could see what I'm trying to make it look like that would be greatly appreciated!!! Thank you so much for your time and info.

 

What year truck is this? Let me know and I will move it to the correct section and maybe some one that knows your year of truck can help you better.