Headlight switch - 75 Duster - Stumped...

SalC said

Doh! I got it.

Terminal B2 (battery 2) is a separate 12v input, from a fused source.

Click to expand...

Also, you can hook the parking lights to the tail light terminal and have "full time" marker / tail lights

Another "diddle."

Your dash lights are a "bit of a trick." The are also supplied from B2, so the tail/ park circuit must work so that the dash lamps can work.

Originally, the output of the dash dimmer went TO the fuse panel "inst" fuse on a tan wire, so that is the only fuse that is "after" the switch