Ignitions and Electrical Wiring Harnesses

Metra Electronics

GM OEM HARNESS W/ MEMORY 73-93

$34.60

SKU: M01F 71-1677-1

In Stock
In Stock
Ships by Jun 17
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Metra 71-1677-1 is a reverse wiring harness designed for 1978-1990 GM vehicles with a 12-pin factory radio. This harness can be used to repair or replace damaged or cut-off factory radio plugs.

It features a 12-pin plug and a 2-pin plug that connect directly to the OEM radio, providing power and connections for four speakers. The harness includes specific wire functions such as 12V Constant, 12V Accessory, Ground, Dash Light Dimmer/Illumination, and connections for left/right front and rear speakers.

Fitment

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Specifications

BrandMetra Electronics
Part NumberM01F 71-1677-1

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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