1978 Wiring Harnesses - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Summit Racing™ Reproduction Headlight Wiring Harness for 1975-1980 Chevy C/K Series Trucks with Round Headlights SUM-RP20659

Summit Racing™ Reproduction Headlight Wiring Harness for 1975-1980 Chevy C/K Series Trucks with Round Headlights SUM-RP20659

1975-1980 Chevy Truck, Forward Lamp Harness, 1980 With Round Headlights, Restoration, Chevrolet, Each

Part Number: SUM-RP20659

5.0 out of 5 stars ( 1 )

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Summit Racing™ Tail Light Wiring Harness for 1973-1978 Chevy C10, K10, GMC C15/C1500, K15/K1500 SUM-RP22817

Rear Lamp Harness, 1973-78 Chevy/GMC Truck, Rear, Stepside, Except 117.5 in. Wheel Base, Each

Part Number: SUM-RP22817

Not Yet Reviewed

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American Autowire Factory-Fit Wiring Harnesses CA58442

Wiring Harnesses, Factory-Fit, Engine Wiring Harness, Chevrolet, Each

Part Number: AWW-CA58442

3.0 out of 5 stars ( 2 )

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Summit Racing™ Engine Wiring Harness for 1978 Chevy/GMC C-Series, K-Series Trucks, Jimmy SUM-RP22804

Engine Wiring Harness, 1978 Chevy/GMC Truck, C-10, V/8, 305,350,400 C.I, Each

Part Number: SUM-RP22804

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Summit Racing™ Intermediate Tail Light Wiring Harness for 1973-1978 Chevy C10/K10, GMC C15/K15 Series Trucks SUM-RP22821

Rear Lamp Harness, 1973-78 Chevy/GMC Truck, Rear, Stepside, With 117.5 in. Wheel Base, Each

Part Number: SUM-RP22821

Not Yet Reviewed

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Summit Racing™ Reproduction Wiring Harnesses for 1978 CJ5, CJ7 - SUM-RP23081

Engine Harness, 1978 Jeep CJ5/CJ7, V8, With Manual Trans, Reproduction Of OEM#5462433, Best Quality, Built From OEM Blue Prints, Each

Part Number: SUM-RP23081

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Summit Racing™ Reproduction Wiring Harnesses for 1978 MALIBU - SUM-RP21521

Wiring Harnesses, Engine Wiring Harness, OEM Replacement, Reproduction, Chevy, Each

Part Number: SUM-RP21521

Not Yet Reviewed

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Summit Racing Equipment® Wiring Harnesses for 1977-1978 JIMMY, K5 BLAZER - SUM-RP22820

Rear Lamp Intermediate Harness, 1977-78 K5 Blazer/Jimmy, Each

Part Number: SUM-RP22820

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Summit Racing Equipment® Wiring Harnesses SUM-RP22797

Engine Wiring Harness, 1978 Chevy/GMC Truck, C-10, V/8, 454 C.I, Each

Part Number: SUM-RP22797

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Summit Racing™ Reproduction Wiring Harnesses for 1978 FIREBIRD - SUM-RP24847

Forward Lamp Harness, 1978 Firebird, Each

Part Number: SUM-RP24847

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Summit Racing™ Reproduction Wiring Harnesses for 1978 CJ7 - SUM-RP23082

Engine Harness, 1978 Jeep CJ7, V8, With AutoTrans, Reproduction Of OEM#5462740, Best Quality, Built From OEM Blue Prints, Each

Part Number: SUM-RP23082

Not Yet Reviewed

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Summit Racing™ Reproduction Wiring Harnesses for 1978 CJ5, CJ7 - SUM-RP23083

Engine Harness, 1978 Jeep CJ5/CJ7, 6 Cylinder, With ManualTrans, Reproduction Of OEM#5463895, Best Quality, Built From OEM Blue Prints, Each

Part Number: SUM-RP23083

Not Yet Reviewed

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Summit Racing™ Reproduction Wiring Harnesses for 1977-1978 CORVETTE - SUM-RP21107

Wiring Harness, Cruise Control Harness, Chevy, Each

Part Number: SUM-RP21107

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Summit Racing™ Reproduction Wiring Harnesses for 1978 CORVETTE - SUM-RP21171

Wiring Harness, Engine Harness, Chevy, Each

Part Number: SUM-RP21171

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American Autowire Factory-Fit Wiring Harnesses for 1978 CAMARO - CA85344

Wiring Harnesses, Factory-Fit, Engine, Models with L6 Engine without NB2 Emissions, Chevy, Each

Part Number: AWW-CA85344

Not Yet Reviewed

Estimated Ship Date: Apr 16, 2026 if ordered today

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Estimated Ship Date: Apr 16, 2026 if ordered today

American Autowire Factory-Fit Wiring Harnesses for 1978 CAMARO - CA86693

Wiring Harnesses, Factory-Fit, Air Conditioning, Chevy, Each

Part Number: AWW-CA86693

Not Yet Reviewed

Estimated Ship Date: Apr 16, 2026 if ordered today

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Estimated Ship Date: Apr 16, 2026 if ordered today

American Autowire Factory-Fit Wiring Harnesses for 1978 CAMARO - CA85357

Wiring Harnesses, Factory-Fit, Engine, Models with V8 Engine with NB2 Emissions, Chevy, Each

Part Number: AWW-CA85357

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

American Autowire Factory-Fit Wiring Harnesses for 1978 CAMARO - CA85345

Wiring Harnesses, Factory-Fit, Engine, Models with L6 Engine with NB2 Emissions, Chevy, Each

Part Number: AWW-CA85345

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today