Have 1996 Chevy Cheyenne K3500 with 350 engine.
Problem: No headlights which were working fine and just stopped working. Checked and replaced fuze and one sealed beam but still not working.
Just not getting power to both sealed beams. Hi-Lo dimmer switch works as dash indicator light does work.
Wiring diagram shows a diode that is located in the under hood fuze bock. Do they fail?
Wiring diagram also shows a couple of relays but can't locate them under the hood. Not located in the under hood fuze and relay block. Where are they located.
What else should I check?
