Truck-Lite 52733 – 50 Series 7-Conductor 396 in. (33 ft.) Heavy-Duty Main Power Cable Harness (8/10/12 Gauge, Round Cable, Ring Terminal to Ring Terminal)

Ensure uncompromising power delivery across your trailer layout with the Truck-Lite 52733 50 Series 7-Conductor Main Power Cable Harness. Spanning 396 inches (33 ft.) in length, this heavy-duty main trunk harness is engineered explicitly for commercial semi-trailers, long-haul flatbeds, dump bodies, and vocational transport rigs that demand a robust backbone for lighting and secondary power distribution.

Built to withstand the harshest over-the-road environments, the 52733 harness utilizes a high-performance 8/10/12 gauge combination configuration. This blended wire structure optimizes your electrical system by allocating the correct gauge to specific current loads, eliminating dangerous voltage drops across a massive 33-foot span:

• 8 Gauge: Maximizes ground path return efficiency to prevent flickering lights or system faults.

• 10 Gauge: Designed to effortlessly handle high-amperage auxiliary power lines and ABS components.

• 12 Gauge: Perfect for routing consistent power to standard running lights, stop/turn/tail indicators, and clearance marker networks.

The internal 7-conductor system is safely encased within a premium, abrasion-resistant round PVC jacket. This protective layer shields the wiring from continuous frame vibrations, road debris, moisture, and chemical exposure. Terminated with heavy-duty ring terminals on both ends, this main cable harness guarantees ultra-secure, bolted mechanical connections at your junction box or nose box, drastically minimizing maintenance downtime.