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Automotive Wiring Harnesses

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Automotive Wiring Harnesses

Rely on our large selection of low-priced, high-performance automotive wiring harnesses to tell your speedster what to do next. With circuits ranging from eight to 24,...

Rely on our large selection of low-priced, high-performance automotive wiring harnesses to tell your speedster what to do next. With circuits ranging from eight to 24, and the ability to replace parts on vehicles from as far back as 1946, we have what you need to complete your next auto project. Featuring top brands, including Painless Wiring, Ron Francis Wiring, FAST, and Summit Racing, we can help you get the job done—no matter what the make and model. Harness the power today!

Rely on our large selection of low-priced, high-performance automotive wiring harnesses to tell your speedster what to do next. With circuits ranging from eight to 24, and the ability to replace parts on vehicles from as far back as 1946, we have what you need to complete your next auto project. Featuring top brands, including Painless Wiring, Ron Francis Wiring, FAST, and Summit Racing, we can help you get the job done—no matter what the make and model. Harness the power today!

Individual Parts

Results 1 - 25 of 121

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: Today

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Wire Harnesses, Sniper 2 EFI, Tachometer, Input Ignition, Adapter Harness, for CD Ignition Boxes, Each

Part Number: HLY-558-329

Not Yet Reviewed

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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 )

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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 )

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Wiring Harnesses, RetroBright Adapter, H4, Non-Standard Plug, Pin-Out Swap, Plug-and Play, Ceramic, Premium Version,Pair

Part Number: HLY-H820

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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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 )

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Wiring Harness, Nexus Rebel, Pedal Assembly Adapter, Corvette, Chevy, LS, Each

Part Number: HTH-HT-186507

Not Yet Reviewed

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Wiring Harness, Oil Pressure Adapter, Gen III to Gen IV, Nexus Rebel, Chevrolet, LS, Each

Part Number: HTH-HT-186510

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Transmission Wire Adapter Harness, 18 in. Long, 4L80E, Each

Part Number: ICB-WATRA31-18

Not Yet Reviewed

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Wiring Harness, Elite CAN Adapter Harness, Elite ECU to OBDII Bluetooth/Wireless Module, 72 in. Length, Each

Part Number: HTH-HT-135000

Not Yet Reviewed

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Distributor Adapter Pigtail, Factory-style Replacement, for 1992-93 LT1 Distributors Only, Each

Part Number: PRF-60114

1.0 out of 5 stars ( 1 )

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Wiring Harnesses, Steering Column Adapter Harnesses, Chevrolet, Each

Part Number: AWW-37618

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Wiring Harness Plug & Play Wiring Adapter for Jeep Wrangler JL Reverse Lights

Part Number: ORC-5879-504

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Wiring Harnesses, RetroBright, Adapter, H4, Non-Standard Plug, Pin-Out Swap, Plastic Version, Entry Level, Pair

Part Number: HLY-H821

Not Yet Reviewed

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Relay Control Module, ORACLE Wrangler JK Switchback Turn Signal Y Splitter Adapter (Single )

Part Number: ORC-5851-504

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Wiring Harness, Nexus Rebel, Pedal Assembly Adapter, Bosch, Chevy, LS, Each

Part Number: HTH-HT-186512

Not Yet Reviewed

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Wiring Harnesses, Steering Column Adapter Harnesses, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: AWW-38127

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Wiring Harnesses, Steering Column Adapter Harnesses, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: AWW-37542

Not Yet Reviewed

Estimated Ship Date: Jun 18, 2026 if ordered today

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Estimated Ship Date: Jun 18, 2026 if ordered today

Wiring Harness, ORACLE Lighting Plug & Play Wiring Adapter for Jeep Gladiator JT Reverse Lights

Part Number: ORC-5880-504

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Wiring Harnesses, Steering Column Adapter Harnesses, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: AWW-37009

Not Yet Reviewed

Estimated Ship Date: Jun 19, 2026 if ordered today

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Estimated Ship Date: Jun 19, 2026 if ordered today

IPU Adapter Harness, Connectors, Terminals, Seals, FAST XFI, Kit

Part Number: FST-301300

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 15, 2026 if ordered today

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Estimated Ship Date: Jun 15, 2026 if ordered today

Headlight Wiring Harness, Adapter Harness, Plastic, Black, Harley-Davidson®, Each

Part Number: KUR-5487

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

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Estimated Ship Date: May 6, 2026 if ordered today

Wiring Harnesses, LED Headlight Module, Each

Part Number: DNL-DNLWHS-10200

Not Yet Reviewed

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Ignition Module Harness, XFI, Kit

Part Number: FST-301308

Not Yet Reviewed

Estimated Ship Date: Jun 15, 2026 if ordered today

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Estimated Ship Date: Jun 15, 2026 if ordered today

Headlight Wiring Harness, Adapter Harness, Plastic, Black, Harley-Davidson®, Each

Part Number: KUR-5478

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today