[TaurusKing]

I had an 87 with premium sound,, I bought a set-up from Crutchfield which included a wiring harness which bypassed the factory amp... had to run it from front to back, but no real problems doing that... not necessarily endorsing Crutchfield, they're not the lowest in $$$$, but you can get a good deal once in a while on older stuff or discontinued items,, plus they usually have all the bases covered with wiring and install instructions..