I found one for a Porsche amp...it's a little different, but all the same company.

I have been troubleshooting these for a while now, and am starting to get pretty convinced that it's simply connection and solder issues. Several I have gotten actually had cracked solders. After swapping a few amps out of my car, I am getting a hard time getting any amp (even my good one) to work. That leads me to believe that the connector for the amp is getting worn.

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My Primary Driver - '85 300CD - 4-speed conversion, 2.47 rear, lowered, euro headlights, rebuilding (not restoring so much)

Wife's - '08 Saab Sportcombi Aero

Riding a '03 Yamaha Warrior