I used a spare home amp to trace speaker leads and other assorted tools to find power and ground leads. So far, I've isolated all but one lead to the OEM amps.
Here is the Becker amps and control unit...they originally reside on the passenger side just above the shock tower. The weird think about the amps is each amp controls a side (i.e. left front/rear, and right front/rear). I presumed one was for the front and the other for the rear.
