i have a 1992 lexus sc400. Car did not come with stero and amp, so i want to put aftermarket head unit, subs, and amp in. I have searched and only find threads with how to make your "stock amp" or "stock sub". Can somone attach a thread on the wiring in the dash what wires go where and,what if anything i need todo to bypass old lexus sub wiring?

 

will this work so there is no need for hard wiring?

http://www.amazon.com/Metra-70-1761-...owViewpoints=1

 

It depends on which audio system you have. There is either going to be one or two harness plugs for the factory radio. If there are two, you have the "regular" sound system, and the 1761 harness you found on Amazon will work. If there is only one plug, you have the premium sound system and thus need the 8112.