Junction Block

The Painless Wiring Junction Block (Model 80112) is a heavy-duty electrical distribution component designed for automotive wiring harness applications. This insulated plastic junction box consolidates multiple power connections into a single, organized termination point, eliminating the complexity of managing loose individual wire connections in engine bays, custom builds, or restoration projects.

The junction block features two 10-gauge posts with 10-24 thread studs, providing robust contact surfaces capable of handling the current demands of auxiliary circuits such as fuel pumps, cooling fans, or accessory lighting. The insulated plastic housing prevents accidental shorts and cross-contamination between power and ground circuits. Each post is rated to accept standard ring-terminal connectors and accepts multiple wire terminations, allowing flexible circuit configuration without requiring additional junction hardware or splices that compromise reliability and increase voltage drop across connections.

This junction block is ideal for hot-rod builders, off-road vehicle specialists, marine electrical integrators, and restoration shops that demand clean, organized wiring architecture. The compact footprint (2.75 × 1.4 × 4.2 inches) allows installation in tight engine compartments or auxiliary locations. The black finish resists corrosion and blends seamlessly into custom wiring harnesses. By consolidating multiple wire branches into a single mount point, this junction block reduces installation time and minimizes the risk of loose connections that degrade performance or cause electrical failures under vibration or thermal cycling.