Automotive Wiring Accessories

Wiring Harnesses, Holley EFI, HyperSpark Ignition Adapter, Plug-and-Play, Holley Main Harness to Terminator X EFI System, Each

Part Number: HLY-558-323

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Wiring Harnesses. Holley EFI, Replacement, Input/Output Harness, Terminator EFI Systems, Pre-Terminated, Plug-and-Play, Each

Part Number: HLY-558-462

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Computer Software, Holley EFI, Terminator X, Active Speed Management, Web Download, Drag Race Traction Control, for Terminator X, V3 or Later, Each

Part Number: HLY-555-101

Not Yet Reviewed

Estimated Ship Date: Nov 9, 2026 if ordered today

• Special Order

Wiring Harnesses, Holley EFI, Gen V, LT Engine, Main Harness, for Terminator X, Terminator X Max, ECU Only, Chevy, 5.3L, 6.2L, Each

Part Number: HLY-558-129

Not Yet Reviewed

Estimated Ship Date: Nov 10, 2026

Fuel Injection System Wiring Harnesses, Holley EFI, GM Gen V LTx, Drive-by-Wire, Throttle Body Harness, for Terminator X and X Max ECUs, Each

Part Number: HLY-558-468

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Wiring Harnesses, Holley EFI, Pro-Billet Ignition Adapter, Plug-and-Play, Holley Main Harness to Terminator X EFI System, Each

Part Number: HLY-558-325

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Transmission Harnesses, Holley EFI, Control Harness, Chrysler Transmission, 46RE, Plug-and-Play, for Terminator X Max System Only, Each

Part Number: HLY-558-473

Not Yet Reviewed

Estimated Ship Date: Nov 9, 2026 if shipped by air

Wiring Harnesses, Holley EFI, LT4 Engine, Main Harness, for Terminator X, V3 ECU, Cadillac, Chevy, Each

Part Number: HLY-558-130

Not Yet Reviewed

Estimated Ship Date: Nov 9, 2026 if shipped by air

Wiring Harness Adapters, Sniper EFI 1 Harness to Sniper EFI 2 System, Pre-Terminated, Each

Part Number: SNE-558-489

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

Wiring Harnesses, Holley EFI, LS1/6, 24X/1X, Main Harness, Plug-and-Play, Extended Length, for Dominator/HP EFI Systems, Chevy, 4.8-6.0L, Each

Part Number: HLY-558-133

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 9, 2026 if ordered today

• Special Order

Wiring Harnesses, Holley EFI, Gen III Hemi, VVT, SRV, Sub-Harness Only, Plug-and -Play, for Terminator X, Terminator X Max EFI, Dodge, 5.7-6.4L, Each

Part Number: HLY-558-132

Not Yet Reviewed

Estimated Ship Date: Nov 10, 2026

Wiring Harnesses, Holley EFI, GM Gen V, GDI Late, Sub-Harness, Direct Injection, Pre-Terminated, 4-pin Fuel Sensor, GM, Late LT Based, Engines, Each

Part Number: HLY-558-221

Not Yet Reviewed

Estimated Ship Date: Nov 9, 2026 if shipped by air

Wiring Harness, Holley EFI, Gen III Hemi, VVT, Sub-Harness Only, Plug-and -Play, for Terminator X, Terminator X Max EFI, Dodge, 5.7L, 6.4L, Each

Part Number: HLY-558-131

Not Yet Reviewed

Estimated Ship Date: Nov 9, 2026 if shipped by air

Wiring Harness, Ignition and Engine Position, Edelbrock Pro-Flo 4 Plus, with 58-Tooth Reluctor Wheel, Chevy, LS, Each

Part Number: EDL-36122

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 24, 2026

Wiring Harness, Radiator Fan and Relay Module, Edelbrock Pro-Flo 4 Plus, Each

Part Number: EDL-36115

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2026

Weatherproof Connectors, Holley EFI, GM LSx Engine, Main Harness Connectors, Connectors, Pins, Seals, Cavity Plugs included, Kit

Part Number: HLY-570-103

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Wiring Harness, Four-Pin Alternator, Edelbrock Pro-Flo 4 Plus, Chevy, LS, Each

Part Number: EDL-36155

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2026 if ordered today

• Special Order

Wiring Harness, Ignition and Engine Position, Edelbrock Pro-Flo 4 Plus, with 24-Tooth Reluctor Wheel, Chevy, LS, Each

Part Number: EDL-36112

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2026 if ordered today

• Special Order

Wiring Harness, Knock Sensor, Edelbrock Pro-Flo 4 Plus, Chevy, LS1, Each

Part Number: EDL-36145

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2026 if ordered today

• Special Order

Wire Harnesses, Sniper 2 EFI, Adapter for Pro-Billet Distributer or 2-Wire Magnetic pickup Trigger, Each

Part Number: HLY-558-330

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Wiring Harnesses, Holley EFI, LS2/3/7, 58X/4X, Main Harness, Plug-and-Play, Extended Length, for Dominator/HP EFI Systems, Chevy, 6.0-7.0L, Each

Part Number: HLY-558-134

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Transmission Harness, Holley EFI, Transmission Control Harness, GM 4L60E, Plug-and-Play, Build in relay, for Dominator EFI ECU, Each

Part Number: HLY-558-455

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Fuel Injection System Wiring Harnesses, Holley EFI, Ford GT500, 3V Drive-by-Wire, Throttle Body Harness, Plug-and-Play, Ford, Mustang, 4.6L, 5.4L, Kit

Part Number: HLY-558-461

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Wiring Harness, Knock Sensor, Edelbrock Pro-Flo 4 Plus, Chevy, LS 3, Each

Part Number: EDL-36135

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 24, 2026 if ordered today

• Special Order

Wiring Harness, Single Drive-By-Wire, Edelbrock Pro-Flo 4 Plus, Chevy, LS, Each

Part Number: EDL-36132

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2026 if ordered today

• Special Order