Boat Trailer Wiring Harness. Any vehicle towing a trailer requires trailer connector wiring to safely connect the taillights, turn signals, brake lights and other necessary electrical systems. Learn all about trailer wiring at HowStuffWorks.
Boat trailers are exposed to the elements and heavy loads year 'round. Never fear, new trailer boater—helping you understand. Depending on the complexity of the trailer's lights and other equipment, the wiring harness from the towing vehicle to the trailer might comprise anywhere between four and seven connectors.
Beginners guide: The basics of boat wiring.
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The wire and insulation are cheap and will fail again in a couple of years. This wiring harness is most common on Boat Trailers operating trailer disc brakes as well. Most boat trailers and small utility trailers that don't have their own brakes use this kind of harness plug, often referred.