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.. Hopkins Wiring - 47515. Trailer wiring adapter that changes the 4-pole flat on your vehicle into a 5-pole flat. The blue wire gets spliced into the reverse light wire on the vehicle which is easily done with the included quick splice wire connector.. Hopkins Manufacturing Corporation makes your towing experience simpler and more rewarding through innovation and value. Hopkins offers a variety of towing solutions including vehicle wiring kits, adapters, vehicle and trailer connectors, breakaway systems and much more..
Trailer Parts Superstore sells a wide selection of electronic trailer brake controllers from some of the industries most respected manufacturer's: DEXTER, TAP / HOPKINS, TEKONSHA and DRAWTITE.. In this article you will find references to the standards and technologies that surround a T-1/DS-1 installation. Basic wiring of an RJ-48C smart jack..