Oldsmobile 98 Wiring Harnesses & Electrical - OEM-Fit Harnesses & Components

Restore your Oldsmobile 98’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 Oldsmobile 98—restoring the wiring behind the dash, under the hood, and through the body to factory-correct, or factory-improved, condition.

Our Oldsmobile 98 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 Oldsmobile 98—not a close approximation.

Use the Vehicle Selector above to find the correct wiring or electrical component for your Oldsmobile 98, or browse below to explore available options. Whether you’re chasing judging points with a numbers-matching restoration or simply getting your Oldsmobile 98 running right, Factory Interiors makes it easy to restore your electrical system with wiring products proudly made in the USA.

1954-1996 Oldsmobile 98 Torque Converter Lock-Up Switch Update Kit

use with 700R4 or 2004R automatic trans. EXCEPT 4L60E or 4L80E. Completely externally installed kit allows for automatic operation of the torque converter lock-up (overdrive) without installing the computer!!!! Kit includes instructions.

$113.0
• SALE $112.95
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1954-1996 Oldsmobile 98 Torque Converter Lock-Up Switch Update Kit
1954-1972 Oldsmobile 98 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 #.

1954-1974 Oldsmobile 98 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.

1967-1970 Oldsmobile 98 Air Conditioning Relay

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

1971-1973 Oldsmobile 98 Air Conditioning Relay

-O.E.M. replacement made in U.S.A.-, blower motor, with Std. A/C

(318 Total Products)