Pontoon Boat Wiring Harness | PontoonStuff Our universal pontoon boat wiring harness plugs directly into our switch panel or your existing electrical accessories. Wire runs are correctly gauged to the usual amp draw for each pontoon boat accessory and master circuit protection is included for the entire electrical system. Fused circuit breaker to help prevent overload and fire.4.8/5(11)Price: $99Brand: Pontoon Boat Lights pontoon wiring harness | eBay Save pontoon wiring harness to get e-mail alerts and updates on your eBay Feed. + Items in search results. SPONSORED. See search results that fit your vehicle. HOOSIER Pontoon Trailer 4-Wire x 37' Wiring Harness Kit #WH1837 See more like this. HONDA 16 FOOT 3 PIN IGNITION WIRING HARNESS EXTENSION MARINE BOAT PONTOON. New (Other) $19.