I just put a new head unit in my Crossfire using the Scosche VW harness. I believe this harness sends the speaker-level output directly to the factory amp, which then goes to the speakers.

I'm pretty sure my aftermarket head unit is sending a much higher signal to the amp than the factory unit. This is causing me to get a lot of noise--and for the volume levels to be high, even at the lowest setting on the new head unit.

I have a few questions:

1. Where is the factory amp located in the Crossfire?

2. Is it possible or wise to disable/bypass the factory amp and just power the speakers from the head unit?

3. If, as I suspect, the factory head unit sends a low signal to the amp, and since I have RCA outs on my new head unit, can I run RCAs from the head unit and splice them into speaker wires in the harness?

Any advice is appreciated. Thanks.