Amp to interior speakers

Wait! If you have the premium sound system, which most T-Birds did, then there is an amp under the rear deck, all wiring can be done right there. You can use an LOC and tap into the sigal back there and then run your signal from the amps back into the stock wiring going to the speakers. Get the Metra amp by pass kit and wiring into the factory system is a peice of cake!. Jazzy