mastercraft harness | eBay www›Search›mastercraft harnessFind great deals on eBay for mastercraft harness. Shop with confidence. Skip to main content. eBay Logo: MasterCraft Boat Wiring Harness w/ Switches 508464 | Tower Light 125V See more like this. Mastercraft 12 Plug N Play Alum Boat Ballast Switch Panel W/ Harness 509919P. Brand New. MasterCraft 8115152 Engine 16 Ft Boat Wiring Harness GLS stock number 1031779 is a new, out of package, engine wiring harness from MasterCraft, part number 8115152. This 16 ft harness features (6) 16 GA wires.