SKU: PWI10105
UPC: 749823101050
MPN: 10105
The Painless Wiring CJ2-5 Jeep Wiring Harness with Thru Firewall Grommet is a 22-circuit complete electrical solution designed specifically for classic Jeep CJ models from 1944 to 1975. This pre-assembled harness eliminates the confusion and labor of sourcing individual components and routing wires through a complex firewall installation, providing a factory-quality backbone for restorations, custom builds, and modernization projects where original wiring has deteriorated or been removed.
The 22-circuit design accommodates all essential electrical loads on classic CJ platforms—engine controls, ignition, lighting, charging, and auxiliary circuits—without requiring custom modifications or splice work. The integrated thru-firewall grommet seals the passage of wires from engine bay to interior, reducing moisture intrusion and protecting conductors from abrasion against sharp firewall edges. This attention to detail is critical in restoration work, where water and corrosion are the primary enemies of reliability in older vehicles. The complete kit approach means you receive all connectors, terminals, and integration points pre-fabricated to OEM specifications, dramatically reducing installation time compared to building a harness from individual components.
This harness is ideal for restorers, off-road enthusiasts, and classic Jeep collectors who need a dependable, proven electrical foundation. Whether you're performing a frame-off restoration, converting from 6-volt to 12-volt systems, or upgrading to modern lighting and accessories, this harness provides the backbone that allows those upgrades to integrate cleanly. Painless Wiring has built a reputation in the restoration market for pre-engineered kits that respect original vehicle architecture while solving the real problems that emerge when original electrical systems age.
CJ2-5 harnesses are commonly specified for 1944–1975 Jeep CJ restorations and are recognized as a standard solution among restoration shops and dedicated Jeep forums. The modular, customizable circuit design means individual runs can be adapted to your specific build without sacrificing the engineered structure of the kit.
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