71 Duster 360 turbo build
I also struggled with an electrical issue at the end of last season. Everything was good until I installed a battery shutoff switch. The car died on the first test drive and needed a jump. I had successfully re-wired the car and moved the battery a solid month before installing the shutoff. It seemed as if I fried something the first time I killed the engine with the switch. I’ll have to look into that more when it’s back together.