Cadillac Wiring Harnesses & Electrical - OEM-Fit Harnesses & Components

Restore your Cadillac ’s electrical system with precision-engineered wiring harnesses and electrical components designed specifically for your vehicle. Each harness is manufactured to match the original routing, connectors, and circuits of your Cadillac —restoring the wiring behind the dash, under the hood, and through the body to factory-correct, or factory-improved, condition.

Our Cadillac electrical lineup includes complete wiring harness sets, battery cables and ground straps, switches, electrical devices, and update/conversion products such as alternator upgrades and electronic ignition conversions. Every component is manufactured and tested to deliver dependable, factory-correct performance, and is organized by your vehicle’s exact year to ensure the harness or component you order is the one built for your Cadillac —not a close approximation.

Use the Vehicle Selector above to find the correct wiring or electrical component for your Cadillac , or browse below to explore available options. Whether you’re chasing judging points with a numbers-matching restoration or simply getting your Cadillac running right, Factory Interiors makes it easy to restore your electrical system with wiring products proudly made in the USA.

1959-1974 Cadillac Fleetwood Wire Harness Modification: Conversion to H.e.i.

GM H.E.I. (High Energy Ignition) style distributor. Order the correct harness part # for your car along with this modification part #. The harness you need to order is usually the Engine Harness, but can be the Dash Harness. To verify, check the wiring going to the ignition coil and ballast resistor (if applicable) in your car.

1950-1964 Cadillac Series 60 Fleetwood Wire Harness Modification: Conversion to H.e.i.

GM H.E.I. (High Energy Ignition) style distributor. Order the correct harness part # for your car along with this modification part #. The harness you need to order is usually the Engine Harness, but can be the Dash Harness. To verify, check the wiring going to the ignition coil and ballast resistor (if applicable) in your car.

1950-1964 Cadillac Series 75 Fleetwood Wire Harness Modification: Conversion to H.e.i.

GM H.E.I. (High Energy Ignition) style distributor. Order the correct harness part # for your car along with this modification part #. The harness you need to order is usually the Engine Harness, but can be the Dash Harness. To verify, check the wiring going to the ignition coil and ballast resistor (if applicable) in your car.

1948-1968 Cadillac Series 62 Wire Harness Modification: Conversion to H.e.i.

GM H.E.I. (High Energy Ignition) style distributor. Order the correct harness part # for your car along with this modification part #. The harness you need to order is usually the Engine Harness, but can be the Dash Harness. To verify, check the wiring going to the ignition coil and ballast resistor (if applicable) in your car.

1966-1967 Cadillac DeVille Air Conditioning Relay

-O.E.M. replacement made in U.S.A.-, blower motor,

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