If you have a aftermarket amp in the back I garantee he did one of two things maybe three.
1. Bypassed the factory wiring and ran his own.
2.Cut the factory speaker wire from the factory harness and ran new wires from there to the new amp.
3. If the amp if for a sub than you SHOULD be fine however some installers like myself still run new wires to new speakers if they are being installed.
In either case you are going to have to do more work than just plug in the factory head unit.
If 1. is done you are going to have to open the door panels and run wire from the stock wire to the crossover wherever that may be. Why? Because component speakers have a crossover that sends signal to the tweeter and the woofer separately. This means you have to hard wire new wires to the factory wire than run that new wire to the input of the crossover.
If 2 is done you are going to have to solder or re connect the factory wires to the stock harness and hope that there is enough slack in the spare wire in order to do that from where they cut it.
If 3 is done you are going to have to do what was done in 1.
My recommendation? Leave the aftermarket system in there for two reasons. The aftermarket speakers are not going to sound anywhere near as good as they do now with a factory head unit powering them with 8 watts.
Last edited by bigaudiofanat; 02-23-2011 at 08:53 PM.
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