Trailer Connector Wiring Adapters | O'Reilly Auto Parts Order Trailer Connector Wiring Adapters for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35+. Check here for special coupons and promotions.Founded Location: Springfield, MO Best Trailer Wiring Adapter Parts for Cars, Trucks & SUVs A search for trailer wiring adapters near me shows multiple brands and wiring types. The most commonly used wire system is the three-wire system. There is a wire to the turn, stop and tail light that needs to be converted to two wires to connect to the single trailer light wire. So, there is a connector and a converter as part of these systems.
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