1975-1986 Jeep CJ Customizable Wiring Harness
The 1975–1986 Jeep CJ represents one of the most iconic off-road platforms ever built and now Painless Performance delivers a complete wiring solution engineered specifically for custom CJ builds. Whether you’re restoring a classic CJ-5, upgrading a CJ-7, or modernizing a trail-prepped CJ-8 Scrambler, this 22-circuit harness provides the reliability of modern wiring while preserving the classic Jeep layout and functionality.
Designed for builders who want flexibility, the Painless 10106 harness uses an OEM-style fuse block with open-ended wire leads, allowing truly customizable routing. Every wire is factory Jeep color-coded, printed with the circuit name every few inches, and bundled for clean installation across carbureted engines, HEI conversions, or stand-alone fuel injection systems.
Built around a bulkhead firewall passthrough, this harness mirrors the CJ’s original design while giving you room for upgrades like electric chokes, accessory power, radios, fans, off-road lighting, and more. Painless includes pre-terminated connectors for GM column-mounted ignition and turn signal switches, two headlight pigtails, dimmer switch connector, 10SI/12SI alternator plugs, and a full set of 56-Series terminals for finishing factory-style connections.
If you’re rewiring a later-model CJ and want a customizable, shop-grade solution that still installs cleanly and reliably, this is the harness trusted by Jeep builders nationwide.
Why the Painless 10106 Harness Is the Ultimate Upgrade for 1975–1986 Jeep CJ Builds
Engineered for Later CJ Models
Perfect for CJ-5, CJ-7, and CJ-8 applications. Supports carbureted engines, HEI conversions, and stand-alone EFI without modification.
Customizable Routing
Open-ended wire leads allow you to run wiring exactly where you want it — ideal for modified dashboards, aftermarket gauges, switch panels, or off-road accessories.
Factory Jeep Accuracy
Every wire uses factory Jeep color coding and printed circuit designations for seamless installation and easy diagnostics for years to come.
Modern Protection & Durability
Features 12 blade fuses, maxi-fuse protection, integrated horn relay, and high-quality TXL automotive-grade wire.
GM Column Compatibility Included
Pre-terminated connectors for:
Column ignition switch
Turn signal switch
HEI power and tach
10SI / 12SI alternators
Headlights, dimmer, wipers, blower, and more
Built for Restorations or Custom Builds
Whether restoring a stock CJ or building a trail-ready restomod with auxiliary lights, dual batteries, radios, or on-board accessories, this harness is designed to handle it.
Circuits Included
A/C & Heat • Accessory / Cigarette Lighter • Backup Lights • Brake Lights • Charging • Dome Light • Electric Choke • Emergency Flashers • Fan Relay Activation • Fused Power • Headlights • Horn Relay • Ignition Coil • Instrument Panel Lighting • Gauges • Park Lights • Radio/Clock (Constant & Switched) • Starting • Tail Lights • Third Brake Light • Turn Signals • Under Hood Light • Wipers
Gauge Wiring Provided For:
Emergency Brake • 4WD Indicator • Fuel Gauge • Oil Gauge • Tachometer • Temperature Gauge • Voltmeter