Austin Boston
CarAudio.com Newbie
- 1
Not getting power to an aftermarket head unit in a 2006 Chevy Avalanche.
I used a multimeter to test the yellow 12V constant circuit which showed ~12V, so far so good. Then I tested the red 12V switched circuit with the car running and got no reading, so it looks to me like the problem is something to do with this circuit. I checked the radio fuse and it was not blown. I thought perhaps there was a separate fuse for the switched radio circuit but I can't figure out which it would be. I've tested almost all of the fuses related to ignition or accessory and all are good. I also threw a different head unit in there just to rule out that it was a bad unit (even though it should've still shown voltage on the switched circuit when the car was running). Looking for advice on where to go next in my diagnosis. Thanks.
I used a multimeter to test the yellow 12V constant circuit which showed ~12V, so far so good. Then I tested the red 12V switched circuit with the car running and got no reading, so it looks to me like the problem is something to do with this circuit. I checked the radio fuse and it was not blown. I thought perhaps there was a separate fuse for the switched radio circuit but I can't figure out which it would be. I've tested almost all of the fuses related to ignition or accessory and all are good. I also threw a different head unit in there just to rule out that it was a bad unit (even though it should've still shown voltage on the switched circuit when the car was running). Looking for advice on where to go next in my diagnosis. Thanks.
