Metra 70-1858 Radio Wiring Harness For GM 88-05 Harness

Connects an Aftermarket Receiver to Factory Plug on Select 1988-2002 GM Vehicles

Product Features

  • Plugs into car harness
  • Power/4 Speaker
  • 21-Pin plug
  • Used for Installing an Aftermarket Receiver to factory plug
  • Allows for the installation of an aftermarket radio using the existing factory wiring and connectors
  • For 1988+ GM models

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2 Responses to Metra 70-1858 Radio Wiring Harness For GM 88-05 Harness

  1. Jennifer Schloeder says:

    Doesn’t work but here’s how you fix it on a 2002 Chevy Avalanche I matched up the wires color for color to my Pioneer 8700 (using 3M gel connecters took 5 min!). I removed my old deck and this harness plugged right in. The deck turned on and seamed fine except I had NO sound coming from the speakers (sub worked with RCAs). I thought for sure the speaker wires were wrong so I double checked the schematic. Everything was wired correctly. After many hours of research, I figured out that the Blue with white stripe (amp turn on) wire from the new deck needed…

  2. Ed says:

    2002 Chevy 1500 +++++