Holley Harnesses
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Holley EFI Main Power Harness
HolleyThis Harness is required with HP or Dominator ECUs. Includes, 13' long, 10 AWG main power harness, Qty. (2) 3/8" ring terminals and shrink tube (no...
View full details7.3-LITER GODZILLA MAIN HARNESS WITH SMART COILS
HolleyThe Terminator X offers an advanced engine management solution specifically tailored for the formidable 7.3-liter Godzilla engine. Designed to unlo...
View full details7.3-LITER GODZILLA MAIN HARNESS FOR STOCK COILS
HolleyThe Terminator X offers an advanced engine management solution specifically tailored for the formidable 7.3-liter Godzilla engine. Designed to unlo...
View full detailsHolley EFI Ford Coyote Engine Main Harness W/ TI-VCT And Stock Coils (2011-2017)
HolleyIntroducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your...
View full detailsHolley C-N-P Ignition Sub Harness (Big Wire)
Holley"Big Wire" Sub Harness- pre wired with 12ga power and grounds, for optimal performance!
Holley EFI Unterminated 15' Flying Lead Main Harness
HolleyThe unterminated main harness comes with both J1A and J1B connectors full terminated with 15' of flying lead wiring. Features: 15’ long flying l...
View full detailsCoyote Main Harness Connector Kit
HolleyIntroducing EFI Engine Connector Kits – From Holley EFI. With the latest addition to our ever-expanding Wiring Shop, our goal was to provide you wi...
View full detailsFord V8 Injector Harness
HolleyFord V8 Injector Harness for Ford USCAR / EV6 style Fuel Injectors (Evenly Spaced)
Ford Modular 4 Valve EFI Harness Kit
HolleyThis wiring harness interfaces a Holley EFI ECU to a 4V Ford Modular engine. It is meant to be used in conjunction with an injector harness, a coil...
View full detailsFord Modular 2 Valve EFI Harness Kit
HolleyThis wiring harness interfaces a Holley EFI ECU to a 2V Modular Ford engine. It is meant to be used in conjunction with an injector harness, a coil...
View full detailsInjector Driver Module, W/ Harness
HolleyIntroducing the Holley EFI Programmable 8 Channel Injector Driver Module. The ultimate solution for methanol burning engines that require a large s...
View full detailsUniversal MPFI Coil On Plug Main Harness
HolleyThis harness provides a plug and play upgrade solution for those seeking to convert to Coil-On-Plug. Additionally we have pre-installed a Power Tap...
View full detailsV8 Over Manifold, Bosch Style Injector Harness
HolleyV8 over Manifold, Bosch Style Connector Harness for Avenger EFI, HP EFI & Dominator EFI
Unterminated Vehicle Harness For Digital Dash
HolleyUnterminated Vehicle Harness For Digital Dash
Terminated Vehicle Harness For Digital Dash
HolleyTerminated Vehicle Harness For Digital Dash
Digital Dash Service Harness
HolleyService replacement digital dash harness. Features: CANBus Connector Wiring USB Connector Wiring
Can Adapter - Female 2 Pin To Male 4 Pin
HolleyThe Holley EFI Can Adapter/Power Harness adapts two pin Holley main harness CAN connectors to new style 4 pin CAN devices.
Digital Dash I/O Adapter W/ Terminated Vehicle Harness
HolleyI/O Adapter w/Terminated Vehicle Harness Features: Provides ten addiitonal inputs/outputs to the 7" digital dash Brings out connections to a wat...
View full detailsHolley EFI Can Adapter/Power Harness
HolleyThe Holley EFI Can Adapter/Power Harness adapts two pin Holley main harness CAN connectors to new style 4 pin CAN devices.
Digital Dash I/O Adapter W/ Unterminated Vehicle Harness
HolleyI/O Adapter w/Unterminated Vehicle Harness Features: Provides ten addiitonal inputs/outputs to the 7" digital dash Brings out connections to a wa...
View full detailsHolley EFI Ford Coyote TI-VCT Sub Harness (2013-2017)
HolleyIntroducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your...
View full detailsFord Coyote Coil Harness
HolleyCoil Harness for 2011 to 2015 Ford Coyote (5.0L) Engines
Holley EFI Main Power Harness For Coyote TI-VCT Applications
HolleyIntroducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your...
View full detailsFord Coyote TI-VCT Coil Harness (2015.5-2017)
HolleyIntroducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your...
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