Weird radio constant power problem in my Nismo....

DCNISMO

No bose. Just bizarre that it worked then two hours later nothing. The switched power comes on fine at 12 volts, but the constatnt power does nothing. I tapped into my dome light to get constant power which is a 10 amp circuit, but that should still be ok as the radio and XM shoud not draw more than 5 amps and the light is only about 2 or so. 12 volts at 10 amps is 120 watts of power. Plus I don't think I'll be playing the radio with the dome light on much. I was going to run off the battery directly but could not find a easy firewall pass through to route the wire.