Other information:
When using a weight carrying or a weight
distributing hitch, keep the tongue load between
10 - 15% of the total trailer load or use
the trailer tongue load specified by the
trailer manufacturer. The tongue load
must be within the maximum tongue load
limits shown in the following “Towing
Load/Specification” chart...
Engine block heaters are used to assist
with cold temperature starting.
The engine block heater should be used
when the outside temperature is 20°F (-7°C)
or lower.
WARNING
Do not use your engine block heater
with an ungrounded electrical system
or a 2-pronged adapter...