Does anyone have a diagram of the wiring harness for the headlights on a quad-light 4x4 wagon? I drove it to work one afternoon, the lights worked and after work that night, they no longer worked. No sputtering in or out, no fuses popped, but for some odd reason they've stopped working. We pulled the switch and checked it and it seemed to be working fine. Any thoughts and ideas are appreciated, thanks folks.

It's a 78 GL btw.