My install took a long time. I think it was more than enght hours. I already had most of the equipment. I mainly just purchased speakers and signal and speaker cable from them. My system is typical with two amps, four speakers, and two subs. My car has a factory amp. They cut the wires on the connectors on the factory amp to connect my four-channel amp to them. They also cut the connectors off of the factory speakers so they could use those wires to connect to the new speakers. The system worked well. The biggest problem was putting the car back to stock so I could put my system in a different car. I had to purchase splice connectors to connect all the wires back. I did not appreicate that I could not just hook the connectors back up. Crutchfield sells adaptors to connect aftermarket speakers to factory speaker connectors, so these are available to electronics shops. I wish they would have ran new speaker wire for the speakers too. Becareful if you plan to put your stereo back to stock

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