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

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

Our Chevrolet 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 Chevrolet —not a close approximation.

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

1947-1987 Chevy C10 Classic Update Series Alternator Conversion Harness

1947-1987 Chevy C10 Classic Update Series Alternator Conversion Harness, built to original specification.

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

1947-1987 Chevy C10 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
Select Color/Material Options  
1947-1987 Chevy C10 Torque Converter Lock-Up Switch Update Kit
1947-1987 Chevy C20 Classic Update Series 175 Amp Mega-Fuse

for use only with our RestoMod Series wiring system, should your Mega-Fuse become damaged or in need of replacement. NOTE: 2 of these Mega-Fuses are already included with our Classic Update Series wiring system.

1947-1987 Chevy C20 Classic Update Series Alternator Conversion Harness

1947-1987 Chevy C20 Classic Update Series Alternator Conversion Harness, built to original specification.

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

1947-1987 Chevy C20 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
Select Color/Material Options  
1947-1987 Chevy C20 Torque Converter Lock-Up Switch Update Kit

(17314 Total Products)