Video Transcript for Hopkins Wiring 37185 Review. Today we're going to be reviewing part number 37185. This is an adapter that's going to convert from 4 pole wiring on your vehicle to a 7 pole round plug and 4 pole flat plug.. Helpful information and resources on Massey Ferguson tractors from SSB Tractor, a leading provider of tractor parts, manuals, implements and toys. Hey everyone, I have a 1996 Chevy C1500 with a 5.7L Vortec, I got the truck recently and was told it just needed a Fuel pump, I replaced the Fuel pump, and the Filter, also the pump turns on and there is fuel up at the rail, I pushed the pin and it shot right out..