Originally Posted by Rooz
You don't HAVE to rewire the car,
it wouldn't hurt at all to by-pass the factory amp and replace all the speakers, but it's not a must. Just buy a regular aftermarket harness and connect up the wires to your pioneer harness (the colors will match
I pretty much do if I want to get the use out of 4-way 6x9s in the back and 3-way 5 1/4s in the front. I wonder - can I keep the factory amp hooked up to supply the front doors still?