Title: 99 Tahoe
Product review: I purchased the GM-1 T harness to assist in the installation of a viper 560. The size of the harness, its bulk and length, does not provide for an easy installation. Tapping into the factory wiring is just as easy and will save you the price of this product. Data sheets with the location, color, and purpose of each wire needed for installation are located online and open to the public.
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