A store was working on my car, they touched something and I lost my cluster display. Lost my AC display, all the switches work turn signals lights everything. When I turn my car on the displays come on for about 20 seconds then blink off. Does the cluster supply voltage to the AC module display. Could a bad voltage regulator cause this.
No. Best thing to do would be to return your vehicle to where you last had it worked on and ask them to double check the work. Explain the situation as best you can and hopefully they will be able to correct any errors they may have made.
It does appear that there is some correlation between the two modules when looking at the wiring diagram.
