2005 Chevy Trailblazer OE Wiring Harnesses & Stereo wwwd››Chevy›TrailblazerMetra®Aftermarket Radio Wiring Harness with OEM Plug and Retention OnStar Chevy Trailblazer / Trailblazer EXT 2005, Aftermarket Radio Wiring Harness by Metra®, with OEM Plug and Retention OnStar. For aftermarket stereo. Metra preassembled wiring harnesses can make your car stereo installation seamless, or at.. Chevrolet Trailblazer Stereo Wiring Harness - AutoZone wwwzone››Chevrolet Trailblazer HarnessesOrder Chevrolet Trailblazer Stereo Wiring Harness online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store.