10
7. Unplug light harness connectors on truck, and
disconnect plow light connectors, which had been
plugged together for corrosion protection during storage
(See Figure 1-18).
Figure 1-18
CAUTION
Many new vehicles are equipped with onboard
circuit sensors designed to display a
dashboard LED when a headlight fails.
Generally, these sensors are activated or
tripped any time the circuit is being called upon
to function while the headlight circuit is
incomplete. This means that if a headlight fails
while the headlight is in operation, the sensor
will trip and the dashboard indicator will light
up. It also means that if a headlamp socket is
left empty—or a faulty lamp is installed—and
the circuit is then activated, the sensor will trip
and the dashboard indicator will light up.
These headlight circuit sensors are often
engineered with pre-designated failure limits.
This means that a sensor may be tripped a
limited number of times. After that limit is
reached the sensor may need to be reset by the
dealer or replaced by the manufacturer.
Sno-Way EIS plow light systems essentially
operate through a planned interruption of the
headlight circuit. When the truck-side
connectors are detached from one another, the
vehicle headlamps are disconnected from the
truck circuits which otherwise power them.
Until those truck-side connectors are attached
to the plow-side light connectors, the truck-side
circuits are open. This means that if the truck’s
onboard sensors are active while the plow
lights are being attached to the truck, the
truck’s sensors may trip.
CAUTION
To avoid unnecessarily tripping the truck’s
sensor, every time the plow lights are being
attached to the truck circuits or the truck
circuits are being reattached to the vehicle
lights, the truck’s lights should be turned off.
Due to the aforementioned concerns, operators
of vehicles equipped with EIS lights should
make themselves aware of whatever circuit
sensors may be installed on their vehicles.
Operators should further become familiar with
their vehicle manufacturer’s description of how
their truck’s sensors are actuated or tripped.
Finally operators should know whether
predesignated failure limits may be engineered
into their truck’s sensors and what repair or
replacement procedures are recommended
should those limits be reached. Currently, the
vehicle models affected are as follows:
2006 and later-Dodge Dakota and Durango - All
packages.
2006 and later-Dodge 1500, 2500 and 3500- All
packages.
2008 Ford F250-F550 - All packages.
PLOW LIGHT
CONNECTORS
TRUCK LIGHT HARNESS
CONNECTORS
To Next Page
Loading...
