I took the heater out of the wall a few years ago...a third bath that's never used...and then I had a small stroke so now I'm ready to re wire and cannot find pics/diagram of what wire went to what wire and I'd prefer not to wire incorrectly! I've attached two pics of wiring in wall and wiring of heater switch. Can someone advise which color goes to which color? I think black to black from what I've Googled but my brain isn't what it was and I know electricity isn't anything to think you know about if you don't! Also..the grounds...there are multiples and they are twisted and one attached to a screw...I read that just twisting isn't sufficient...advice? Thanks for any help!