[V8] Rear Speakers KB?

[Scott Phillips]

All, in the Bose Coded cars. The bose system flatlines the output (no
matter what you adjust the bass and treble to), and the bose chips in
the amps take care of the balance, fader and bass / treble controls to
do whatever sound processing it needs to, to get the "bose" sound. 

That why if you look the metal cover on the amps they say Alpha Rear (or
Front) and are side specific. (Alpha is for "Our cars"), if you look at
EBay, the amps are on there are usually for a Sigma or other, those amps
are tuned for other manufacturers and other cars (specifically)

In connector A it's either pin 1 or 2 labeled BOSE. That goes to ground.
If you remove the ground from that pin, you'll get control of your bass
and treble again. ;-) 

HTH..

Scott '90 V8Q x2