69 Dart short

Agreed above. I had this issue twice. One was water in front parking lamp from crack in lens. The other was a pinched parking light wire that was pinched under a front fender washer that slid under while I installed the fender. Like said do a visual maybe you'll get lucky.

I have visually chk'd front lamps. Will do more thoroughly as described. As for the dash dimmer....everything there is new and custom. Not sure what the shop did there. But none of the old dash gauge cluster exists anymore. I'll compare your instructions with what I find there. If I had to bet, thats where the issue is. I'm leaving on a mini vacation and will have a week to ponder it before I attack it next week.