Fleets with liftgate charging systems that use a 7-way can sometimes have issues getting adequate power to their charging systems.

Many technicians will try to measure the power by unplugging the 7-way and using a voltmeter to check the pins in that cord for voltage. But this only provides them with the voltage and not the power. To test the power, the voltage has to be measured while current is flowing. Without the proper tools this can be very difficult.

Purkeys designed the Liftgate Double Check (LDC) to specifically be able to do this.

To begin, properly connect the adapters, start the vehicle, and then hit start on the 20 Amp Applied Load Module that comes with the LDC. When the load is applied technicians should check their voltmeter to see the voltage drop caused by the 7-way.

If the voltmeter reads fewer than 11 volts with the load on, then either the cord or the truck is not capable of providing sufficient power to keep the liftgate charging system operational. Technicians can us the tester again on the truck to determine which of the two it is.

The LDC gives technicians a quick and easy way to check cords and trucks to make sure they are capable of delivering enough power to the liftgate charging system.

Are you dealing with electrical issues? Are you looking for advice for liftgate charging systems? We welcome your comments and questions below.

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