Wiring Harnesses
Choose wiring harnesses for the specific component, control system and application. Check connector types, wire lengths and electrical requirements, and confirm whether relays, switches or adapters are included.
Related categories: Wiring Components · Wiring Connectors · Ignitions and Electrical
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![Engine Main Harness Ford 5.0L/5.8L Engine Wiring Harnesses Holley EFI]()
![Engine Main Harness Ford 5.0L/5.8L Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFIEngine Main Harness Ford 5.0L/5.8L- Regular price
- £655.14
- Regular price
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£655.14 - Sale price
- £655.14
- Unit price
- per
Engine Main Harness Ford 5.0L/5.8LEngine Wiring Harness - Plug-and-Play - Small Block Ford - Each -
![Wire Harness MPFI to SS MAP Adapter Engine Wiring Harnesses Holley EFI]()
![Wire Harness MPFI to SS MAP Adapter Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFIWire Harness MPFI to SS MAP Adapter- Regular price
- £55.94
- Regular price
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£55.94 - Sale price
- £55.94
- Unit price
- per
Wire Harness MPFI to SS MAP AdapterWiring Harness Adapter - MPDI Map Sensor to Delphi GT Sensor - Each -
![Trans Wire Harness Ford 4R70W/4R75W 1998-Up Transmission Wiring Harnesses Holley EFI]()
![Trans Wire Harness Ford 4R70W/4R75W 1998-Up Transmission Wiring Harnesses Holley EFI]()
Vendor:Holley EFITrans Wire Harness Ford 4R70W/4R75W 1998-Up- Regular price
- £320.26
- Regular price
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£320.26 - Sale price
- £320.26
- Unit price
- per
Trans Wire Harness Ford 4R70W/4R75W 1998-UpTransmission Wiring Harness - Plug-N-Play - j4 Connector - 4R70W / 4R75W - Ford - Each -
![Wiring Harness Chrysler 46RE Trans Control Transmission Wiring Harnesses Holley EFI]()
![Wiring Harness Chrysler 46RE Trans Control Transmission Wiring Harnesses Holley EFI]()
Vendor:Holley EFIWiring Harness Chrysler 46RE Trans Control- Regular price
- £201.54
- Regular price
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£201.54 - Sale price
- £201.54
- Unit price
- per
Wiring Harness Chrysler 46RE Trans ControlTransmission Wiring Harness - Plug-N-Play - j4 Connector - Terminator X MAX - 46RE - Chrysler - Each -
![Injector Harness Ford w/ Jetronic Injectors Fuel Injector Harnesses Holley EFI]()
![Injector Harness Ford w/ Jetronic Injectors Fuel Injector Harnesses Holley EFI]()
Vendor:Holley EFIInjector Harness Ford w/ Jetronic Injectors- Regular price
- £238.50
- Regular price
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£238.50 - Sale price
- £238.50
- Unit price
- per
Injector Harness Ford w/ Jetronic InjectorsEFI Wiring Harness - EV1 Style Injectors - Ford V8 - Each -
![Wire Harness - LS2/LS3/ LS7 Fuel Injectors Fuel Injector Harnesses Holley EFI]()
![Wire Harness - LS2/LS3/ LS7 Fuel Injectors Fuel Injector Harnesses Holley EFI]()
Vendor:Holley EFIWire Harness - LS2/LS3/ LS7 Fuel Injectors- Regular price
- £1,063.94
- Regular price
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£1,063.94 - Sale price
- £1,063.94
- Unit price
- per
Wire Harness - LS2/LS3/ LS7 Fuel InjectorsEFI Wiring Harness - EV6 Style Injectors - Holley 58X Crank Sensor EFI - Kit -
![Adapter Harness Wideband Terminator-X Engine Wiring Harnesses Holley EFI]()
![Adapter Harness Wideband Terminator-X Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFIAdapter Harness Wideband Terminator-X- Regular price
- £74.76
- Regular price
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£74.76 - Sale price
- £74.76
- Unit price
- per
Adapter Harness Wideband Terminator-XWiring Harness Adapter - Terminator X - Wideband - Each -
![Injector Harness - 16 Injectors - Unterminated Fuel Injector Harnesses Holley EFI]()
![Injector Harness - 16 Injectors - Unterminated Fuel Injector Harnesses Holley EFI]()
Vendor:Holley EFIInjector Harness - 16 Injectors - Unterminated- Regular price
- £195.94
- Regular price
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£195.94 - Sale price
- £195.94
- Unit price
- per
Injector Harness - 16 Injectors - UnterminatedEFI Wiring Harness - Bosch EV1 Style Injectors - Holley HP / Dominator EFI - Kit -
![Injector Harness - Ford USCAR/EV6 Style Injector Engine Wiring Harnesses Holley EFI]()
![Injector Harness - Ford USCAR/EV6 Style Injector Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFIInjector Harness - Ford USCAR/EV6 Style Injector- Regular price
- £232.90
- Regular price
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£232.90 - Sale price
- £232.90
- Unit price
- per
Injector Harness - Ford USCAR/EV6 Style InjectorEFI Wiring Harness - EV6 / USCAR Style Injectors - Holley EFI - Small Block Ford - Each -
![Can Adapter- New Device to 2-Pin Main Harness Engine Wiring Harnesses Holley EFI]()
![Can Adapter- New Device to 2-Pin Main Harness Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFICan Adapter- New Device to 2-Pin Main Harness- Regular price
- £50.11
- Regular price
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£50.11 - Sale price
- £50.11
- Unit price
- per
Can Adapter- New Device to 2-Pin Main HarnessData Transfer Cable Adapter - 2 Pin Harness to CAN - Each -
![Trans Wire Harness GM 4L60 Pre 2009 - 4L80 Engine Wiring Harnesses Holley EFI]()
![Trans Wire Harness GM 4L60 Pre 2009 - 4L80 Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFITrans Wire Harness GM 4L60 Pre 2009 - 4L80- Regular price
- £357.22
- Regular price
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£357.22 - Sale price
- £357.22
- Unit price
- per
Trans Wire Harness GM 4L60 Pre 2009 - 4L80EFI Wiring Harness - Transmission - Holley Dominator EFI - GM 4L60E / 4L80E - Each -
![Dominator EFI DBW Harness - Early Truck Engine Wiring Harnesses Holley EFI]()
![Dominator EFI DBW Harness - Early Truck Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFIDominator EFI DBW Harness - Early Truck- Regular price
- £320.26
- Regular price
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£320.26 - Sale price
- £320.26
- Unit price
- per
Dominator EFI DBW Harness - Early TruckEFI Wiring Harness - Drive by Wire - Holley Dominator EFI - GM - Each -
![Injector Wiring Harness V8 EV6 Style Injectors Fuel Injector Harnesses Holley EFI]()
![Injector Wiring Harness V8 EV6 Style Injectors Fuel Injector Harnesses Holley EFI]()
Vendor:Holley EFIInjector Wiring Harness V8 EV6 Style Injectors- Regular price
- £212.74
- Regular price
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£212.74 - Sale price
- £212.74
- Unit price
- per
Injector Wiring Harness V8 EV6 Style InjectorsEFI Wiring Harness - EV6 Style Injectors - Holley Dominator EFI - Each -
![EFI Injector Harness - Universal Unterminated Engine Wiring Harnesses Holley EFI]()
![EFI Injector Harness - Universal Unterminated Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFIEFI Injector Harness - Universal Unterminated- Regular price
- £134.34
- Regular price
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£134.34 - Sale price
- £134.34
- Unit price
- per
EFI Injector Harness - Universal UnterminatedFuel Injector Harness - Unterminated - Bosch Terminal Ends Included - Holley HP / Dominator EFI - Kit -
![Main Wiring Harness LS1 & LS6 Engine Wiring Harnesses Holley EFI]()
![Main Wiring Harness LS1 & LS6 Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFIMain Wiring Harness LS1 & LS6- Regular price
- £757.06
- Regular price
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£757.06 - Sale price
- £757.06
- Unit price
- per
Main Wiring Harness LS1 & LS6EFI Wiring Harness - Main Harness - Holley HP / Dominator EFI - 24x Reluctor Wheel - LS1 / LS6 - GM LS-Series - Each -
![Main Harness - Universal MPFI Engine Wiring Harnesses Holley EFI]()
![Main Harness - Universal MPFI Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFIMain Harness - Universal MPFI- Regular price
- £640.58
- Regular price
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£640.58 - Sale price
- £640.58
- Unit price
- per
Main Harness - Universal MPFIEFI Wiring Harness - MPFI Main Harness - Holley HP / Dominator EFI - Universal - Each -
![Main Harness - Univesal Un-Terminated Engine Wiring Harnesses Holley EFI]()
![Main Harness - Univesal Un-Terminated Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFIMain Harness - Univesal Un-Terminated- Regular price
- £640.58
- Regular price
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£640.58 - Sale price
- £640.58
- Unit price
- per
Main Harness - Univesal Un-TerminatedEFI Wiring Harness - Unterminated Main Harness - Holley HP / Dominator EFI - Kit -
![Drive By Wire Harness GM Engine Wiring Harnesses Holley EFI]()
![Drive By Wire Harness GM Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFIDrive By Wire Harness GM- Regular price
- £291.14
- Regular price
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£291.14 - Sale price
- £291.14
- Unit price
- per
Drive By Wire Harness GMEFI Wiring Harness - Drive by Wire - Holley Dominator EFI - GM - Each -
![Main Wiring Harness LS2 & LS3 Engine Wiring Harnesses Holley EFI]()
![Main Wiring Harness LS2 & LS3 Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFIMain Wiring Harness LS2 & LS3- Regular price
- £757.06
- Regular price
-
£757.06 - Sale price
- £757.06
- Unit price
- per
Main Wiring Harness LS2 & LS3EFI Wiring Harness - Main Harness - Holley HP / Dominator EFI - 58x Reluctor Wheel - LS2 / LS3 / LS7 - GM LS-Series - Each -
![CAN Extension Harness 8ft Length Engine Wiring Harnesses Holley EFI]()
![CAN Extension Harness 8ft Length Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFICAN Extension Harness 8ft Length- Regular price
- £78.61
- Regular price
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£78.61 - Sale price
- £78.61
- Unit price
- per
CAN Extension Harness 8ft LengthCAN Wiring Harness - Extension Harness - 8 ft Long - Black Rubber Coated - Each -
![Can Extension Harness 12ft Engine Wiring Harnesses Holley EFI]()
![Can Extension Harness 12ft Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFICan Extension Harness 12ft- Regular price
- £94.40
- Regular price
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£94.40 - Sale price
- £94.40
- Unit price
- per
Can Extension Harness 12ftCAN Wiring Harness - Extension Harness - 12 ft Long - Black Rubber Coated - Each -
![CAN Extension Harness 9in Length Engine Wiring Harnesses Holley EFI]()
![CAN Extension Harness 9in Length Engine Wiring Harnesses Holley EFI]()
Vendor:Holley EFICAN Extension Harness 9in Length- Regular price
- £63.00
- Regular price
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£63.00 - Sale price
- £63.00
- Unit price
- per
CAN Extension Harness 9in LengthCAN Wiring Harness - Extension Harness - 9 in Long - Black Rubber Coated - Each -
![Injector Wiring Harness V8 Bosch Style Injectors Fuel Injector Harnesses Holley EFI]()
![Injector Wiring Harness V8 Bosch Style Injectors Fuel Injector Harnesses Holley EFI]()
Vendor:Holley EFIInjector Wiring Harness V8 Bosch Style Injectors- Regular price
- £238.50
- Regular price
-
£238.50 - Sale price
- £238.50
- Unit price
- per
Injector Wiring Harness V8 Bosch Style InjectorsEFI Wiring Harness - Bosch Style Injectors - Holley Dominator EFI - Each -
![I/O Adapter for Digital Dash Dash Wiring Harnesses Holley EFI]()
![I/O Adapter for Digital Dash Dash Wiring Harnesses Holley EFI]()
Vendor:Holley EFII/O Adapter for Digital Dash- Regular price
- £190.34
- Regular price
-
£190.34 - Sale price
- £190.34
- Unit price
- per
I/O Adapter for Digital DashDigital Dash Wiring Harness - Input/Output Extender - Holley Digital Dash - Kit
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