Beginners Guide to RV Wiring
|Wiring the 7 pole RV Tow Vehicle SocketView looking into the front (contact) end of tow vehicle socket.
There are two wiring codes for different 7 pole plug sets.
Most RV's use the RV wiring code for the type of plug/socket
that has 6 flat contacts surrounding the center round pin.
Semi's and other commercial trailers use the ASME
(American Society of Mechanical Engineers) type of 7-pole plug set.
This plug has 6 round contacts surrounding the center pin.
The wiring color code for this plug is not the same as the
RV 7 pole plug described below, and will be included at a future time.
7 pole RV plug/socket.
||Location - Truck socket
||Location Trailer plug
||LT & Stop
||RT & Stop
||Aux or BU