When you’re chasing electrical gremlins in a Full Size Jeep, having the right test leads makes the job faster and more accurate. These jumper test leads are designed for quick circuit testing and simulation, making them ideal for wiring harness diagnosis, gauge cluster restoration, and troubleshooting switches or connections.

Each set includes color-coded, insulated leads with secure clips that provide solid contact without risk of shorts. They allow you to bypass sections of wire, simulate a switch, or create a temporary test circuit — exactly what you need when working through decades-old wiring on Full-Size Wagoneers, Cherokees, Grand Wagoneers, or J-Series trucks.

Common Uses for Full Size Jeeps

• Bypass damaged wiring to confirm if the fault is in the wire or the component.
• Simulate switch operation when diagnosing lighting circuits, blower motors, or accessories.
• Test gauge clusters by feeding power or ground to verify functionality.
• Verify continuity and connections on old or corroded harness plugs.

Signs that your Full Size Jeep might need a good pair of jumper/test leads to diagnose or fix the issue:

• Swap‐out of old wiring or connectors reveals intermittent power or ground faults — lights/dash only work sometimes.
• Gauges not registering (empty/full, temp, fuel) — voltage didn't make it through the harness.
• Accessories (radio, brake lights, turn signals) act erratically or not at all — could be a broken switch or open circuit.
• Smoke, burning smell, or corrosion at connectors — leads let you bypass damaged sections to test components directly.

Features

• 16in length
• Color-coded leads for quick identification
• Alligator clip terminals for safe, reliable connections
• Strong grip clips prevent accidental disconnection
• Perfect for electrical troubleshooting and restorations