Swap out worn wiring with Optronics harnesses that have installed as direct replacements and fit perfectly with minimal modifications. Options include 5-way wishbone setups that simplify running light connections and 7-way to 5-way adapters that carry turn, brake, tail, and reverse circuits for hydraulic brake lockouts. Some replacements feature thicker wiring and sheathing for a sturdier feel.
Install is straightforward. Use the old harness as a drag line, run wires down the trailer tubes, and solder with heat-shrink for durability. Some replacements have thicker wiring and sheath, so you may need to adjust clamps or brackets. Plan the ground and blue (backup) wire runs if you ground each light or add reverse lights.
No, a 5-flat is for lights and an electric lockout on a hydraulic actuator. For electric brakes you need a 7-way with brake output and 12V power. If you're wiring a hydraulic lockout directly, you can cut the 5-flat and hardwire it, matching functions, but don't expect it to power electric brakes.
They split the running lights into two wires, one for each side. To swap to a standard 5-way, tie the two running light wires together and connect them to the brown wire on the new harness, or run a jumper across the trailer. A 5-way also gives you the auxiliary/reverse circuit for a surge brake lockout or backup lights.
It can be. A 25 ft 5-way has been used on a 24 foot trailer with rear crossover wires. Measure your frame and any crossovers to confirm you have enough length, and trim excess if needed.
Yes, it works on any vehicle that has a 7-way. Just plug it in and you'll get lighting plus the reverse/aux circuit for a hydraulic brake lockout. If your 7-way socket is tight or worn, check the plug head fit and support any heavy coiled leads to reduce wobble and loose connections.
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