for this thread, I have a similar issue:
https://www.yotatech.com/forums/f131...turned-149545/
you said you had a bad ground. Where is the ground that comes out of the dimmer/rheostat actually grounded? I can only trace mine up behind the heater, and into some other junction box. I can't establish a good ground. I'm thinking of cutting the wire behind my rheostat, and grounding that. However, as I'm trying this, I'm blowing fuses left and right.