flatbed plug and go wiring harness | eBay www›Search›flatbed plug and go wiring harnessFind great deals on eBay for flatbed plug and go wiring harness. Shop with confidence. Flatbed Wire Harness - Full Set - Bradford Built, Inc. Flatbed Harness built to fit 84"-136" Beds. There are 3 sections to this harness: Headache Rack, length of deck, and tailskirt. This harness has all the light plugs for a standard Bradford Built flatbed.