Proper Liftgate Grounding

Updated Nov 28, 2012

Many liftgates still use single pole systems and are grounded through the fifth wheel and kingpin. According to Phillips, when the kingpin ground is interrupted, the 8-gauge wire at the J560 connector can become overloaded.

Phillips says the solution is a dual-pole cable. The dual-pole cable has a dedicated positive and ground line directly from the tractor batteries.

The extra reliability in the connection ensures that there is a continuous charge to the liftgate batteries.

When using the dual-pole cable, Phillips says you are providing a cleaner signal to the liftgate batteries and other auxiliary components.

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