6
Pin
Wire
Motorhome/
Number Color Towed
Vehicle
1 ..........Blue ...........Brake monitor light
(electric trailer brakes)
2 ..........Black .........Auxiliary/Charge
3 ..........Green ........Right Turn/Stop
4 ..........Brown ........Taillights
5 ..........White .........Ground
6 ..........Yellow ........Left Turn/Stop
Figure 7
front of
6-wire plug
5.
Connect the power cord to the motorhome and towed
vehicle. Test the towed vehicle’s turn signals, tail lights
and brake lights to ensure they operate in conjunction
with those of the motorhome.
Wiring the socket for a seven-wire system
If the motorhome does not have an electrical socket or
has the wrong socket, install and wire the socket according
to Figure 8. A socket bracket (optional) must be installed
at the rear of the motorhome, as close to the center as
possible, to a surface of sufficient strength to hold it firmly
in place.
front of
6-wire socket
WIRING INSTRUCTIONS
If you should need to rewire the six-wire plug and socket,
or wire a seven-way socket, follow the instructions below.
CAUTION
If it's necessary to attach an electrical socket bracket
(see below), make certain to attach the bracket close to
the center of the towed vehicle. If the bracket is attached
too far to either side, the bracket and the electrical
socket may be pulled away when the motorhome turns.
If the plugs and sockets are not properly wired, the
electrical connection will not function, and the towed
vehicle’s turn signals and brake lights will not mimic
those of the motorhome. Drivers behind the towed
vehicle will not be alerted by turn signals or brake
lights, which may result in a traffic accident, causing
property damage, personal injury or even death.
Wiring the plug for a six-wire system
1.
Insert the end of the electrical cord through one of the
cable guides.
2.
Strip ¼" to 3/8" of insulation from the ends. Connect
the wires according to Figure 7; apply a silicone sealant to
the attachment points to help prevent damage from moisture
and corrosion.
Wiring the socket for a six-wire system
1.
If necessary, find a suitable location to install one of
the electrical socket brackets on the front of the towed
vehicle, in reach of the existing six-wire harness. The
bracket must be attached close to the center, and to a
surface of sufficient strength to hold it firmly in place.
2.
Strip ¼" to 3/8" of insulation from the ends of the wires.
Loosen the set screw at the back of the socket and push
the inner connector out the front. Then run the six-wire
electrical cord through the back of the protective boot and
the housing.
3.
Loosen all of the set screws on the side of the socket, and
connect the wires to the back of the socket as shown in Figure 7.
4.
Tighten all the set screws and check each wire to
ensure that it is fastened securely. Apply a clear silicone
sealant around each wire entry and set screw indentation
to help weatherproof the socket and secure the set screws.
Pin
Socket Roadmaster Motorhome/
Number Code
Wire Code
Towed Vehicle
1 ......... White ......... White .............. Ground
2 ......... Blue ........... Blue ................ Brake monitor light
(electric trailer brakes)
3 ......... Green ........ Brown ............. Taillights
4 ......... Black ......... Black .............. Charge line
5 ......... Red ........... Yellow ............ Left turn/Stop
6 ......... Brown ........ Green ............. Right turn/Stop
7 ......... Yellow ....... N/A* ................ Auxiliary/Access
* ‘N/A' means this socket is not used in this wiring
configuration.
Figure 8
front of
7-wire socket
