Pontiac Grand LeMans Wiring Harnesses & Electrical - OEM-Fit Harnesses & Components
Restore your Pontiac Grand LeMans’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 Pontiac Grand LeMans—restoring the wiring behind the dash, under the hood, and through the body to factory-correct, or factory-improved, condition.
Our Pontiac Grand LeMans 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 Pontiac Grand LeMans—not a close approximation.
Use the Vehicle Selector above to find the correct wiring or electrical component for your Pontiac Grand LeMans, or browse below to explore available options. Whether you’re chasing judging points with a numbers-matching restoration or simply getting your Pontiac Grand LeMans running right, Factory Interiors makes it easy to restore your electrical system with wiring products proudly made in the USA.
1976 Pontiac Grand LeMans Ground Strap, built to original specification.
- Choose your exact application from the options above
- Each option lists the equipment and fitment it covers
1976 Pontiac Grand LeMans Alternator Conversion Harness, built to original specification.
- Choose your exact application from the options above
- Each option lists the equipment and fitment it covers
Ventura (wiring from speaker to speaker harness connector, 1 required per speaker) Use when installing aftermarket speakers. Made to solder wires directly to aftermarket speaker and with correct connector for connection to original wiring.
Flaming River or 1977 & later GM column to stock Dash Harness, Ventura Note: Adapts horn, directionals, 4 way flashers, & ignition key warning of column to stock 1971-76 dash connector
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.
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