4-7
TOPAZ
4. Wiring Harness:
Every trailer is designed with a wiring
harness that conveys electrical
signals and power from the tow
vehicle to the trailer. Each wiring
harness is equipped with a heavy
duty 7 pin connector that mates into
a matched socket on the tow vehicle.
Always have a trained professional
install and wire the receptacle on the
tow vehicle to be sure the required
signals and power is conveyed to the
trailer. Pass this wiring diagram to
the installer when the outlet is being
installed.
Always stow the connector away
from the elements when not in use to
keep clean and minimize corrosion.
Inspect carefully each time before
using. Clean the terminals before
using if there is any sign of corro-
sion.
Always use a special high-temperature 10
gauge wire to terminal 4 to provide power for
charging the trailer battery while driving. It is
recommended that a 30 amp fuse be installed
in the tow vehicle charging circuit. The trailer
battery must be fully charged to properly power
the trailer brakes in an emergency.
5. Breakaway Switch:
Every brake/electrical system is designed with
a breakaway switch that directs trailer battery
power to engage the trailer brakes when the
switch is actuated. The switch is equipped with
a pin that actuates (ie. opens or closes) the
switch/trailer battery power to the brakes. A
steel cable is connected to the pin and is long
enough to extend along the tongue/hitch and
attach to the tow vehicle. The cable must
always be attached to a non-removable compo-
nent on the tow vehicle.
When the pin is removed from the breakaway
switch, the switch closes and electrical power
from the trailer batteries actuate the brakes. In
operation, if the trailer unhooks from the tow
vehicle, the pin will be pulled from the switch
and the trailer battery will actuate the brakes.
Always check the function of the switch when-
ever the trailer is being hooked-up to a tow
vehicle. Manually remove the pin and check
that the brakes are locked up. Be sure the
battery is fully charged. Install the pin again to
proceed.
Lubricate the pin every three months with a light
oil and spray the inside of the switch with a
contact cleaner to prevent corrosion and keep
these components in good condition.
Fig. 4-8 PLUG WIRING DIAGRAM
BRAKE AND ELECTRICAL SYSTEM
Fig. 4-9 ACTIVATED BREAKAWAY SWITCH
To Next Page
Loading...
