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Old 10-21-2020, 10:11 PM
Marky mark
Admirals Club Admiral's Club Member
Join Date: Aug 2010
Location: Sydney, Australia
Posts: 296
Received 46 Likes on 30 Posts

Often these things are related to how the lights are grounded. Check there is a dedicated ground from each light that connects to the plug on the trailer and that the socket on your truck is properly grounded as well.