7-way power testing everything electrical on a truck trailer - Unravel Travel TV
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7-way power testing everything electrical on a truck trailer - Unravel Travel TV
It is common for fleets to have a tester in the shop that will supply power to trailer circuits and make the lights illuminate. When a technician performs this test and sees that the trailer lights are working, they often assume it is good to go. Problems with the lights can still occur if the truck and 7-way cable aren’t tested under load ...
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