Hey guys so I'm putting back the OEM radio in. I put it back in, connect everything, and find that neither the heater nor the radio controls work - the lights do not light up either. I was also disconnect my amp power wire from the battery so I figured that might have blown a fuse or something. I checked the radio and heater fuses under the dash - all are fine. But when I connect the multimeter to see the voltage between power and ground, I get 0 - no power supplied. No when I connect the ground wire on the multimeter to the chasis, i get the 12v. Is there a common ground somewhere that I disconnected?

 

nm. Just made a new ground.... weird