First of all......search. This topic has been discussed many many times before. Secondly DON'T hack up your factory wiring! There is no need for cutting your harness when there are all sorts of kits that will plug into your factory harness. If you can't find one at your local stereo shop PM me, I have a few laying around. And last, look into replacing your factory 4x6 speakers with 6.5" coax or components, it's relatively easy to do and they sound 10x better. (don't qoute me on the 10x part, I have no research to back that up

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