Wiring For Trailer Board - Buy LoadRite factory made boat trailer parts and accessories at discount pricing online from Trailer Parts Superstore. Authorized LoadRite Parts Dealer.. Car trailer build. - posted in Fabrication: I thought i would put my trailer build here to help out anyone thinking of building one. Be patient it may take me a few weeks to put all the infoup. After hiring trailer for far to long i finally got around to building one, i searched the net for free plans but couldn't find any so i decided to juststart building one..