GMC K25 Suburban Wiring Harnesses & Electrical - OEM-Fit Harnesses & Components
Restore your GMC K25 Suburban’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 GMC K25 Suburban—restoring the wiring behind the dash, under the hood, and through the body to factory-correct, or factory-improved, condition.
Our GMC K25 Suburban 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 GMC K25 Suburban—not a close approximation.
Use the Vehicle Selector above to find the correct wiring or electrical component for your GMC K25 Suburban, or browse below to explore available options. Whether you’re chasing judging points with a numbers-matching restoration or simply getting your GMC K25 Suburban running right, Factory Interiors makes it easy to restore your electrical system with wiring products proudly made in the USA.
Rear Body Light Harness to reproduction/replacement 1967-72 backup light assembIies, Stepside. Includes 2 adapter wires which allow use of non-original backup light assemblies (bullet-type power terminal on backup light wire from backup light assemblies)
(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.
front single dash speaker, (wiring from speaker to speaker harness connector) Use when installing aftermarket speaker. Made to solder wires directly to aftermarket speaker and with correct connector for connection to original wiring.
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.
-O.E.M. replacement made in U.S.A.-, blower motor,
(40 Total Products)