Seven-Pin Towing Connector - Tiffin Motorhomes Allegro Bus 2016 Owner's Manual

ELECTRICAL FEATURES

SEVEN-PIN TOWING CONNECTOR

Your Allegro Bus is
equipped with a stan-
dard, 7-pin connector
near the towing hitch
at the rear of the mo-
torhome to supply the
necessary circuitry to
control a towed vehi-
cle.
The wiring of that
connector is shown
in the accompanying
diagram (see Figure
9-12).
Make sure that any ca-
ble from the vehicle to
Figure 9-12:
be towed is wired cor-
Seven-Pin towing connector
rectly to mate properly
with the connections
shown in the connector. If in doubt about proper wiring, have a qualified service technician prepare
and install the necessary cable to mate with the 7-pin connector on the motor home to assure proper
operation subsequently when any vehicle is actually towed by the motorhome.
When the towed vehicle is uncoupled from the motorhome and the cable is disconnected from the
7-pin connector, be sure to close the spring-hinged cover plate on the connector to protect the contact
pins from dirt or debris. In a similar manner, protect the cable end from similar damage, weather, or
debris—one such method could be to place the connector end in a heavy-gauge plastic bag (e.g., poly-
propylene, polyethylene, etc.) and secure the bag tightly around the cable with a stout elastic band or
tape and then mount the secured cable in a manner to keep it both from mechanical damage and water
intrusion.
When the towed vehicle is again coupled to the motorhome via the towing hitch and the cable is again
connected to the 7-pin connector, make sure the resultant connection is tight and solid so that the con-
nection won't jar loose during use. Several supplemental methods to secure that connection have been
used; some of which include securing the connection with a strong rubber band or with Velcro-type
fasteners to provide a supplemental mechanical backup to the actual electromechanical connection.
Should a conversion adapter to convert the round, seven-pin connector to a flat, four-pin connector be
needed; such an adapter may be purchased from any RV after-market store.
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