Truck-Lite 51345 – 50 Series 1-Plug Left Hand (LH) Driver Side 420 in. LED Turn/Tail & Mid-Turn Marker Harness (14 Gauge, Flat Cable, Fit 'N Forget S.S. to Ring Terminal)

Ensure safe, reliable electrical delivery across long trailer configurations with the Truck-Lite 51345 50 Series Turn/Tail & Mid-Turn Marker Wiring Harness. Engineered specifically for left-hand (LH / Driver Side) installation, this extra-long 420-inch (35 ft.) heavy-duty harness provides an extended reach designed to route cleanly through the frames of large commercial trailers, vocational trucks, and tankers.

Built to overcome the brutal over-the-road environments that heavy-duty vehicles face, the 51345 harness is constructed with thick, ultra-durable 14-gauge (14 AWG) copper conductors. This heavy-duty wire size is vital for preventing voltage drop over massive spans, ensuring your mid-turn and rear LED lighting setups receive optimal, consistent power. Its low-profile flat cable styling lays flat along the frame, preventing unneeded bulk and shielding internal circuits from pinches or snags during installation.

The harness features premium weather protection at critical termination points. One end is integrated with a single molded Fit 'N Forget S.S. (Super Seal) stainless steel plug assembly that creates an airtight, corrosion-proof barrier directly at the lamp interface. The opposite termination splits into secure ring terminals, allowing for direct grounding and solid electrical integration with your main system junction. This fully sealed setup locks out harmful road salt, moisture, and grime, drastically eliminating the risk of circuit failure due to continuous vehicle vibration.