I’ve got a 1976 Chevy Itasca RV on a Chevy p20 chasis, the system is a 350tbi. After I got a new alternator put in my gages spin crazily, they ALL spin besides the battery gage one I’ve noticed. I’ve gotten it looked at by 2 mechanics and the wiring is fine according to them, they say it’s the cluster panel itself but I struggle to understand that as they were working perfectly fine before the new alternator. Also there’s a green wire, it was connected to something then I discovered it burned off at the end. I also noticed there’s two green wires coming from the headlight switch if that matters at all, dark green and light green. At this point I’m wanting to check it all out myself, do you have any advice?