1942 GMC Truck Parts - Wiring & Connectors

Reproduction tie strap used on various late model GM vehicles to secure the wiring harnesses within the engine compartment. Can be used on any vehicle by simply drilling a standard 1/4" hole. Correct hardware can make any...

This harness is used for wiring your T-56 magnum reverse lockout solenoid.

Replacement fuse block screws used on various GM vehicles. Black phosphate with wax sealer. Correct hardware can make any installation job easier. Replace your missing or damaged hardware with these quality reproductions....

Mounts in 5/16" hole. 12 Volt operation. Made in USA

Single male fan pigtail connector for Northern or SPAL single fans. Required when not using Northern relay harness. Note: This same pigtail is included on Northern relay harnesses. Use part# 40080 for Northern relay...

Reverse light switch harness fits all Tremec TKO, Ford T-5, T-45, T-56, and Legend GT manual transmissions, along with any other application that uses a Pollack two-post switch. This is a direct replacement backup/reverse...

This harness/pigtail is to be used when wiring an electronic speedometer to your GM TKO transmission. Factory style for GM TKO 500/600 transmissions.

Mounts in 1/8" hole. 12 Volt operation. Made in USA

Installing air conditioning to your hot rod with dual electric cooling fans? Need cooling fan relays to operate off a thermostatic switch and when your AC is on? Then this dual activation cooling fan relay set by Painless...

Mounts in 1/2" hole. 12 Volt operation. Made in USA

Mounts in 1/2" hole. 12 Volt operation. Made in USA

Mounts in 1/2" hole. 12 Volt operation. Made in USA

SPAL wiring kits are a must-have when installing an electric fan. Designed to safely integrate with OEM wiring harness. Feature a waterproof 40 amp relay, stainless steel switch with optional switched override capability...

The Pro Series system is the ultimate wire solution from Keep It Clean™. Thanks to detailed instructions, color-coded and labeled wire, and plug-n-play connectors, Pro Series is easy to install and simple to expand....

Clean up the wiring in your engine compartment by replacing missing or broken engine wiring straps. Available in a variety of finishes, all straps fit and function as original Correct hardware can make any installation job...

Mounts in 5/16" hole. 12 Volt operation. Made in USA

This universal 4 window billet style switch set comes with a 4 switch driver's control panel, 3 individual window switches, wiring harnesses and instructions. Note: These window switches are not designed to replace the OE...

This set is designed to allow a wide range of temperature adjustments for Champion or Challenger Series electric fans. Set Includes: Heavy gauge wire harness Relay Weatherproof fuse Electrical connec tors Adjustable...

Nu-Relics Power Windows S- Boots door wiring conduit. These boots install between the jamb and the door to protect the wiring and seal out the elements. Can be used in vehicles 1958 and up. Sold in pairs.

This customizable harness may be just what you need. Wiring harnesses just don?t come any simpler than this. This compact harness has all the basic circuits to get you rolling in no time. This 18 Circuit - 8 Fuse harness...

Mounts in 1/8" hole. 12 Volt operation. Made in USA

EFI Wiring Harness 2006-12 GM LS2/LS3/LS7 This harness is designed for use on any 2006-12 LS2, LS3, LS7, or LS99 with throttle by wire. It uses the factory ECM & TCM and will operate engines with or without varible valve...

EFI Wiring Harness 2006-12 GM LS2/LS3/LS7 This harness is designed for use on any 2006-12 LS2, LS3, LS7, or LS99 with throttle by wire. It uses the factory ECM & TCM and will operate engines with or without varible valve...

Designed to help correct bouncy, or spiking tachometer operation caused by points or noisy ignitions. Made in USA Features: Works with all AutoMeter and Autogage tachometers Releives jumpy/erratic pointer conditions due to...

For alternators that produce up to 100 AMPS, this add-on kit provides heavier gauge wiring with connectors to complete the high output alternator installation process quickly, easily and safely.

This set is designed to operate Champion or Challenger Series electric fans according to water temperature. Set Includes: Heavy gauge wire harness Relay Weatherproof fuse Electrical connectors 185°F temperature sender

This set is designed to operate Champion or Challenger Series electric fans according to water temperature. Set Includes: Heavy gauge wire harness Relay Weatherproof fuse Electrical connectors 185°F temperature sender

Mounts in 1/2" hole. 12 Volt operation. Made in USA

This is the metal connector of WC500110 female connector - 1-way GM HEI ignition. Sold as a package of 10.

Painless Performance high amp alternator wiring kit. This includes a high amp inline fuse with protected fuse holder, all necessary ring terminals, heat shrink, and a detailed set of diagrams and step by step instructions to...

Painless Performance high amp alternator wiring kit. This includes a high amp inline fuse with protected fuse holder, all necessary ring terminals, heat shrink, and a detailed set of diagrams and step by step instructions to...

DEI Easy Loom split wire sleeve installation tool for 8-11mm lines.

Mounts in 1/2" hole. 12 Volt operation. Made in USA

Reverse switch pigtail for GM T-5 and all non-Magnum T-56 transmissions including Viper T-56 & 3650.

If you want to keep your under-dash area organized or you think that you need to remove gauges from time to time then you need to install our universal gauge harness. Made in USA Harness will connect to all major brand...

This set is designed to allow a wide range of temperature adjustments for your electric fan. A bulb at the top of the capillary tube is designed to probe or be attached to the top or hottest portion of the radiator. The...

DEI Easy Loom is the answer to those ugly plastic stock wire looms. These split loom sleeves from DEI offer a clean, classy way to protect exposed wires, cables, and hoses. They are easy to install and resistant to abrasion,...

6 pin harness for use with rocker switch # AL701101.

A hot exhaust manifold can cause serious damage to your electrical system and melt important wiring and hoses. If not properly fastened, the wiring harnesses, and washer hoses could fall into an open area between the engine...

This Painless Performance premium performance terminal assortment kit provides 84 pieces of assorted sized electrical teminals. These terminals are American made and are top quality. The terminal assortment kit weighs one...

Installing air conditioning to your hot rod with dual electric cooling fans? Need cooling fan relays to operate off a thermostatic switch and when your AC is on? Then this dual activation cooling fan relay set by Painless...

DEI Easy Loom is the answer to those ugly plastic stock wire looms. These split loom sleeves from DEI offer a clean, classy way to protect exposed wires, cables, and hoses. They are easy to install and resistant to abrasion,...

Relay banks are ideal for powering accessories such as fuel pumps, water pumps, throttle stops, electric cooling fans, nitrous solenoids, etc. and for keeping the relays in a centralized location.

Reproduction wiring harness retainer clip mounted on the firewall of a wide variety of GM vehicles from the 1960's through the 1970's. This metal clip is sometimes welded, instead of bolted, to the firewall to hold the main...

Keep It Clean™ ProComp wire system is easy to install and simple to expand. Includes detailed instructions, color-coded / labeled wire and plug-n-play connectors. The ultra small fuse block can be mounted in any...

If you want to keep your under-dash area organized or you think that you need to remove gauges from time to time then you need to install our universal gauge harness. Made in USA Harness will connect to all major brand...

Mounts in 1/2" hole. 12 Volt operation. Made in USA

Clean up the wiring in your engine compartment by replacing missing or broken engine wiring straps. Available in a variety of finishes, all straps fit and function as original Correct hardware can make any installation job...

DEI Easy Loom is the answer to those ugly plastic stock wire looms. These split loom sleeves from DEI offer a clean, classy way to protect exposed wires, cables, and hoses. They are easy to install and resistant to abrasion,...

DEI Easy Loom is the answer to those ugly plastic stock wire looms. These split loom sleeves from DEI offer a clean, classy way to protect exposed wires, cables, and hoses. They are easy to install and resistant to abrasion,...

DEI Easy Loom is the answer to those ugly plastic stock wire looms. These split loom sleeves from DEI offer a clean, classy way to protect exposed wires, cables, and hoses. They are easy to install and resistant to abrasion,...

This set is designed to operate Champion or Challenger Series electric fans according to water temperature. Set Includes: Heavy gauge wire harness Relay Weatherproof fuse Electrical connectors 195°F temperature sender

This set is designed to operate Champion or Challenger Series electric fans according to water temperature. Set Includes: Heavy gauge wire harness Relay Weatherproof fuse Electrical connectors 195°F temperature sender

Installing air conditioning to your hot rod with dual electric cooling fans? Need cooling fan relays to operate off a thermostatic switch and when your AC is on? Then this dual activation cooling fan relay set by Painless...

Mounts in 5/16" hole. 12 Volt operation. Made in USA

Reproduction "T" clip used on various late model vehicles to secure the wiring harnesses within the engine compartment. Can be used on any vehicle by simply drilling a standard 1/4" hole. Correct hardware can make any...

DEI Easy Loom is the answer to those ugly plastic stock wire looms. These split loom sleeves from DEI offer a clean, classy way to protect exposed wires, cables, and hoses. They are easy to install and resistant to abrasion,...

Single contact pigtail with with 1 wire. For use with lamps 63, 67, 87, 89, 93, 97, 209, 1003, 1073, 1129, 1133, 1141 & 1156.

Universal replacement headlight pigtail wiring harness for vehicles with 3-prong H4/9003 halogen headlamp bulbs. The original socket assemblies are often missing, cracked or brittle on classic cars. This replacement, heavy...

The Pro Series system is the ultimate wire solution from Keep It Clean™. Thanks to detailed instructions, color-coded and labeled wire, and plug-n-play connectors, Pro Series is easy to install and simple to expand....