More data:
I have narrowed it down to the trigger. It seems I get less than 12v when the trigger is connected. But you need the trigger connected to get the amp to come on.
When the trigger is disconnected I have 12V at the amp terminals. I tried jumping the trigger from a different switched power. No dice. But even with an internal fault in the amp I can't figure out why it would drop the voltage at the terminals.
__________________
Rosewood 1983 911 SC Targa | Black 1990 944 S2 | White 1980 BMW R65 | Past: Crystal 1986 944 na
Guards Red is for the Unoriginal