On all connections on the outside of the RV or TV, I use dialytic grease. It is a grease used for any electrical plug type connection. Just coat the plug and receptical metal pieces and it will take care of all contacts. Find at any auto store! If that is your problem?
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2019 Montana 3120 RL
2017 F-350 DWD 4X4 Airsafe Hitch
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