Metra Electronics 70-1858 General Motors 1988-Up - Into Car Harness 21-pin Authorized Dealer Stamp We are a Metra Electronics authorized dealer so you get up-to-date fully warrantied products. Shipping is free to the lower 48 states on everything you order! What s Inside? •Receiver wiring harness • Owner s Manual Plug-and-play Solution The Metra Electronics 70-1858 is a wiring harness designed for select General Motors vehicles. It provides a plug-and-play solution for connecting an aftermarket stereo to the factory wiring harness. The 70-1858 harness includes two connectors that match the factory connectors in the vehicle. The harness also includes color-coded wires that make it easy to connect the aftermarket stereo to the harness. Wiring Harness is a Convenient and Reliable Solution The harness is designed to replace the factory stereo harness directly eliminating the need for cutting or splicing wires. This helps to maintain the factory wiring integrity and makes it easy to revert to the factory setup if needed. Overall the Metra Electronics 70-1858 wiring harness is a convenient and reliable solution for upgrading the stereo in select General Motors vehicles. Its plug-and-play design and color-coded wires make it easy to install an aftermarket stereo while maintaining the integrity of the factory wiring.