Pontiac GTO Wiring Harnesses & Electrical - OEM-Fit Harnesses & Components
Restore your Pontiac GTO’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 GTO—restoring the wiring behind the dash, under the hood, and through the body to factory-correct, or factory-improved, condition.
Our Pontiac GTO 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 GTO—not a close approximation.
Use the Vehicle Selector above to find the correct wiring or electrical component for your Pontiac GTO, or browse below to explore available options. Whether you’re chasing judging points with a numbers-matching restoration or simply getting your Pontiac GTO running right, Factory Interiors makes it easy to restore your electrical system with wiring products proudly made in the USA.
1969 Pontiac GTO Steering Column Turn Signal Switch Adapter Harness, built to original specification.
- Choose your exact application from the options above
- Each option lists the equipment and fitment it covers
Flaming River or 1977 & later GM column to stock Dash Harness, Note: Adapts horn, directionals, 4 way flashers, & ignition key warning of column to stock 1970-73 dash connector
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
1974-1975 Pontiac GTO Steering Column Turn Signal Switch Adapter Harness, built to original specification.
- Choose your exact application from the options above
- Each option lists the equipment and fitment it covers
Flaming River or 1977 & later GM column to stock Dash Harness, Note: Adapts horn, directionals, 4 way flashers, & ignition key warning of column to stock 1976 dash connector
(638 Total Products)