In Reply to: Light switch wiring diagram. posted by Dead Eye Dave on March 12, 2018 at 12:33:03:
Probably about a half dozen things you could have done wrong. And that number increases if you do not the OEM 2-pole switch. Rather than guess, it's easier for me at least to tell you how to wire it correctly.
The switch needs to be between the power source and the lights. Yours isn't.
Wired correctly, the hot wire to the light switch should be attached to the hot side of the terminal block. The wire should go to one pole on the light switch from the terminal block. The other wire from the other pole on the light switch should go to the left headlight. Another wire should go from the left headlight under the hood to the right headlight.