Best Gm Electrical Wiring Harnesses in 2026

Heavy duty bindings offer a greater hold against vibration, abrasions, and moisture

Protective outer coverings which protect against even the toughest conditions

Wires are color coded correctly for easy installation

Xislet 170072 HEI Distributor Battery and Tachometer Pigtail Harness Eliminates the need for obsolete spade terminals that can fall off and kill your ignition

Factory looking and the color coded to make it easy to identify the tach and battery connections

Locking tab and shark fin ensure a tight positive fit and a reliable connection between your wiring and HEI

Universal fit: this harness kit is compatible with all automobiles, boats and devices that use a 12V power source

Two leads Available: with 2 Sets of light output connectors for dual lighting fixtures less than 180W, more stable connection

Simple connection: equipped with DT connector, no wiring between LED light bar and the harness kit, simple and easy installation

【PRODUCT COMPATIBILITY】: 2 pack HEI distributor battery and tachometer pigtail wiring harness compatible with RV Chevy GM HEI 170072.

【HIGH QUALITY】: Made of high-temperature plastic rated at more than 250 degrees, super durability.

【CONNECTION INSTRUCTIONS】: The Green Wire is for the Tachometer, the Red Wire is for the 12 volt key switched wire.

Automotive-grade GXL wires are color coded and labeled every 6 inches to ensure a trouble free installation

Comprehensive instructions with full color pictures takes the headache out of your wiring project

GM column wiring plug (ribbon plug) comes pre-wired making it a plug-and-play installation with 1968-96 GM tilt steering columns

GM COLOR CODED - 21 Circuit Wiring Harness are all coded by GM color for easier installation

INCLUDED CIRCUITS: Wiring Harness Kit included circuits are: horn, fan, dome light, hazard, radio, cigarette lighter, door locks, brake, headlights, trunk light, gauges, back up and cruise, wipers, choke, coil, a/c, electric fuel pump, power windows and turn signals

INSTRUCTIONS: Comes with detailed instructions and have specific pages for GM, Ford and Mopar - You will find this to be a painless wiring kit but Professional Install Recommended

Compatible Vehicles:Speaker Harness for for Select Vehicles GM Vehicles(Include Chevy GMC Silverado Sierra Suburban Tahoe Yukon Cobalt Colorado Pontiac Work van...)

Easy Installation:No cutting into original wires needed,plugs directly into harness

Add A Black Electrical Tapes:Wide about 3/4inch Length 16ft one roll.Repairing Spliced Wires, Cable Insulation, Wire Bundling, and a Great All-Around House

Made by Muzzys and uses the same Delphi/Packard connectors, terminals, and seals as the factory wiring harness using the factory correct cross linked polyethelene high temperature TXL wire in the proper gauge.

SET OF TWO KITS. High Quality Nylon Splices Included

Heavy duty, High efficiency, Heat resistant, Will never melt

💫17 fuses and 21 circuits; GM column connectors are included

💫All wires are labeled every 5 inches so installation is easy

💫To make installation even easier, the wires are GM color coded

【EXCELLENT CONDUCTIVITY】- The complete wiring harness is made of high-quality copper core wires, which has lower eccentricity and resistance, well performed in conducting electricity.

【EXTRA LONG WIRING HARNESS】- The wrapped plastic surfaces can stand high temperatures, all kinds of chemical reagent, strong impact, and press. The extra-long wires help to conduct any wiring circuits.

【12 CIRCUITS 17 FUSE BLOCKS】- This complete engine and transmission wiring harness including 12 circuits and 17 fuse blocks for hot rod vehicle. It supports Modern GM columns. The kit is perfect for a project that is not running all the power options.

Package Dimensions: 14.0 H x 39.0 L x 23.5 W (centimetres)

Package Weight: 3.968 pounds

Country of Origin : China

Effective Function - Transmission adapter harness connector is used for the 4L60E to 4L80E plug-and-play adapter of 1998-2006 transmission. Compatible with GM Vehicles originally equipped with LS series 4L60E Transmissions. Plug it into the 4l60e and convert it to 4l80e. Fit for LS Swap, Silverado , Sierra.

Easy to Use - Easy to install, plug and play. Used to retain all appropriate electrical connections to transmission when converting from 4L60E to 4L80E. Red w/black strip - pin 22, dark blue stripe - pin 23, VSS pin location - red or green ECU connector.

High-quality Adapter - The transmission adapter made of high quality material for higher stability and reliability, meets or exceeds OEM standards. Plug the wiring of the input speed sensor into the power train control module, this kit requires that you have your PCM tuned for the transmission.

OBD II OBD2 Dash Port Wire Pigtail Wiring Harness Plug In Cable Connector

Compatible with Chevy GMC LS LSX LS1 LS2 LS3 LS6 LS7 L92 LQ4 LM7 4.8L 5.3L 5.7L 6.0L 6.2L 7.0L

Assembled with the correct cross linked polyethelene high temperature TXL wire

WMPHE 21 circuit wiring harness kit contains circuits: fan, horn, ceiling light, danger,radio, cigarette lighter, door lock, brake, trunk light, headlight, instrument, backup and cruise, wiper, choke, coil, air conditioning, power windows and turn signals, electric fuel pumps

Line voltage: 12V; fuse: 18 fuses, made of standard copper wire and plastic parts, manufactured according to the standard used in the car, while controlling for accuracy and reliability

This is the replacement electrical high temperature wire and the wire are long enough to be used in almost all vehicles. Every 5 inches are printed with easy to read characters to ensure correct installation. At the same time, a comprehensive manual with pictures is attached, so you don't have to worry about wiring

170072 for HEI Distributor Battery and Tachometer Pigtail Wireing Harness.

Wire Connection Guide: Color coded, Easier to Identify the Tachometer and Battery Connections - The Green Wire is for the Tachometer, the Red Wire is for the Battery.

Locking tab and shark fin design, ensure a tight positive fit and a reliable connection between the wiring and HEI.

Replacement pigtail for GM HEI distributors

Fit type: Universal Fit

Made in United States

Made by Muzzys and uses the same Delphi/Packard connectors, terminals, and seals as the factory wiring harness using the factory correct cross linked polyethelene high temperature TXL wire in the proper gauge.

High Quality Nylon Splices Included

Heavy duty, High efficiency, Heat resistant, Will never melt

Package Dimension : 12 " L x 20 " W x 5 " H

Country of Origin: UNITED STATES

Model Number : 510158

【Replace OE Part Number】7L5533A226T, When buying, check whether the OE of the parts you need is the same as the OE number we sell to ensure that you buy the correct item

【Replacement Part】The dual electric cooling fan wire harness kit fit for 1999–2006 ECU control, and comes wired with 05+ G M truck plugs

【High-Quality Materials】Premium dual electric fan wiring harness is made of durable material which is corrosion and dust resistant, which can meet your long-term use needs, durable

Replace Part Number:7L5533A226T

Compatible with GM 1999–2006 ECU Control.

100% Brand New and High Quality Aftermarket Electric Fan Wiring Harness

Fit for GM Chevy Truck 2005-2012

Package includes: 2pcs pigtaill

Dual Fan Upgrade Wiring Harness Compatible With 1999–2006 GM ECU Control Electric Cooling Fan

Replace Part Number: 7L5533A226T

PA66 (nylon-66) + copper wire Material: PA66 (nylon-66) + copper wire Performance: Flame retardant, Waterproof, Acid proof, High temperature resistance Sturdy and durable, long life service

All the necessary grommets for firewall applications.

This ls standalone wiring harness is a complete wiring harness for fuel injection system, Compatible with GM 1999 2000 2001 2002 2003 2004 2005 2006 Vortec engines with Drive by Cable throttle body and 4L60E or 4L80E (with adapter) transmissions

Provided parts：Complete engine and transmission wiring harness including all engine and transmission sensor connectors, Dash Connections, which include Speedometer, Tachometer, Park Neutral, -TCC, Malfunction Indicator, and a DLC Port, complete detailed instructions

A good grommet is installed on the wiring harness, including wires, and the design of the sliding bellows sealing ring improves the durability of the wiring harness and allows professional leak-proof installation

🚗【Compatible with 】: Fits for 1997-2006 T56 manual transmission DBC LS1 engines or Non-Electric Tran 4.8 5.3 6.0 Engine Wiring Harness Kit.

🚗【Features】: This is a complete wiring harness and comes with a complete install instruction packet.Wiring harness using high reliability,high-temperature,flame-retardant,high-quality materials.Wiring harness come with the needed dash connections, which include speedometer,tachometer, park neutral, -TCC, malfunction indicator, and a DLC port.

🚗【Quality】: All of our harnesses are built with OEM Quality and better.The wiring harness adopt the design of the sliding bellows seal ring to improve the durability and reliability of the wiring harness.We are equipped with two other connectors to better meet your needs.Please check whether it is suitable for your car before purchasing.We recommend professional installation.

Hood tach firewall grommet

Rubber firewall

1968-72

Two Available leads: 12 feet extendable wiring harness, two Sets of light output connectors for dual light fixtures less than 180W

Efficient protection: power relay and inline blade fuse ACT as the first Line of defense against overcurrent and short circuit

Shining in the dark: built-in two premium LEDs emit soft light to illuminate the patterns, easy for you to find the switch in the dark