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

Restore your Cadillac Fleetwood’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 Fleetwood—restoring the wiring behind the dash, under the hood, and through the body to factory-correct, or factory-improved, condition.

Our Cadillac Fleetwood 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 Fleetwood—not a close approximation.

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

1959-1972 Cadillac Fleetwood Wire Harness Modification: Conversion to 1973-1985 Si Series Internally Regulated Alternator

for use in stock generator/alternator original mounting location. Order correct harness part # for your car along with this modification part #.

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.

1966-1967 Cadillac Fleetwood Air Conditioning Relay

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

1968 Cadillac Fleetwood Air Conditioning Relay

1968 Cadillac Fleetwood Air Conditioning Relay, built to original specification.

  • Choose your exact application from the options above
  • Each option lists the equipment and fitment it covers

1969-1970 Cadillac Fleetwood Air Conditioning Relay

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

(192 Total Products)