Collection: Wiring Harnesses
Wiring harnesses are essential components that provide electrical connections between various engine components, sensors, & the vehicle's main electrical system. They consist of a network of wires, connectors, & terminals that route power & signals to different engine components, such as the ignition system, fuel injectors, sensors, & other electrical devices. The engine wiring harness ensures that all the electrical components in the engine bay are properly connected & can communicate with each other & the vehicle's main control unit. It is designed to withstand the harsh conditions under the hood, including heat, vibrations, & exposure to chemicals & fluids. In addition to providing reliable electrical connections, engine wiring harnesses also play a crucial role in organizing & routing the wiring in a neat & organized manner, simplifying troubleshooting & maintenance tasks. If any issues arise with the engine's electrical system, such as faulty connections or damaged wires, the wiring harness may need to be repaired or replaced. Upgrading to aftermarket engine wiring harnesses can also be done to support engine modifications or to improve overall electrical performance.
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Holley EFI MPFI/TPI Main Harness Connector Kit 570-102
Vendor:Regular price $124.00 USDRegular priceUnit price / per$163.68 USDSale price $124.00 USDSale -
Holley EFI Transmission Control Harness - Chrysler 46RE 558-473
Vendor:Regular price $239.00 USDRegular priceUnit price / per$315.48 USDSale price $239.00 USDSale -
Holley EFI CAN Adapter Harness, 4' 558-452
Vendor:Regular price $43.22 USDRegular priceUnit price / per$57.00 USDSale price $43.22 USDSale -
Holley EFI Gauge Power Extension Harnesses 553-141
Vendor:Regular price $8.83 USDRegular priceUnit price / per$11.66 USDSale price $8.83 USDSale -
Holley EFI Terminator Stealth 2x4 Slave Throttle Body Sub Harness 558-442
Vendor:Regular price $110.00 USDRegular priceUnit price / per$145.20 USDSale price $110.00 USDSale -
Holley EFI LS Main Harness to LS3-style MAP Sensor Adapter 558-416
Vendor:Regular price $37.89 USDRegular priceUnit price / per$50.00 USDSale price $37.89 USDSale -
Holley EFI Ford Modular 2 Valve EFI Harness Kit 558-505
Vendor:Regular price $1,249.00 USDRegular priceUnit price / per$1,648.68 USDSale price $1,249.00 USDSale -
Holley EFI LS Coil Extension Harnesses 558-326
Vendor:Regular price $103.00 USDRegular priceUnit price / per$135.96 USDSale price $103.00 USDSale -
Holley EFI Ford Coyote Ti-VCT Harness Kit 558-510
Vendor:Regular price $1,194.00 USDRegular priceUnit price / per$1,576.08 USDSale price $1,194.00 USDSale -
Holley EFI C-N-P Ignition Sub Harness 558-318
Vendor:Regular price $233.00 USDRegular priceUnit price / per$307.56 USDSale price $233.00 USDSale -
Holley EFI HP EFI ECU & Harness Kits 550-606
Vendor:Regular price $2,560.00 USDRegular priceUnit price / per$3,379.20 USDSale price $2,560.00 USDSale -
Holley EFI 4 Pin CAN Connector - Harness Side 570-229
Vendor:Regular price $11.12 USDRegular priceUnit price / per$14.00 USDSale price $11.12 USDSale -
MSD CAN-Bus Extension Harness for Power Grid System '7784
Vendor:Regular price $56.32 USDRegular priceUnit price / per$67.00 USDSale price $56.32 USDSale -
MSD Channel 2, O2 Sensor, Harness, and Bung Kit for Part Number 7766 '2273
Vendor:Regular price $235.95 USDRegular priceUnit price / per$281.60 USDSale price $235.95 USDSold out -
MSD Pressure Sensor - 0-75 PSI - With Harness '22691
Vendor:Regular price $143.95 USDRegular priceUnit price / per$171.60 USDSale price $143.95 USDSale -
MSD Sensor 2, Replacement Harness for Part Number 7766 '2275
Vendor:Regular price $45.32 USDRegular priceUnit price / per$73.00 USDSale price $45.32 USDSale -
MSD SPST Relay w/Socket Harness '89611
Vendor:Regular price $26.56 USDRegular priceUnit price / per$31.00 USDSale price $26.56 USDSale -
MSD to Ford Duraspark Adapter Harness '8869
Vendor:Regular price $30.70 USDRegular priceUnit price / per$36.00 USDSale price $30.70 USDSale -
MSD 6-Hemi Harness 2003-2005 '88863
Vendor:Regular price $297.95 USDRegular priceUnit price / per$355.30 USDSale price $297.95 USDSale -
MSD CAN-Bus Extension Harness for Power Grid System '7786
Vendor:Regular price $67.60 USDRegular priceUnit price / per$80.00 USDSale price $67.60 USDSale -
MSD Replacement Harness for PN 6201/62013 and PN 6425/64253 '8897
Vendor:Regular price $25.57 USDRegular priceUnit price / per$30.00 USDSale price $25.57 USDSale -
MSD Pressure Sensor 2 Harness for 7767 '22721
Vendor:Regular price $29.95 USDRegular priceUnit price / per$36.00 USDSale price $29.95 USDSale -
MSD Solid State N/O Relay w/Socket Harness '89612
Vendor:Regular price $45.19 USDRegular priceUnit price / per$53.00 USDSale price $45.19 USDSale -
MSD Replacement Harness for 62152/62153 Multi-Channel Ignition '8898
Vendor:Regular price $67.60 USDRegular priceUnit price / per$80.00 USDSale price $67.60 USDSale