
Get these little brushes along with a set of diamond files to clean the pins and you'll never have a trailer headlight that doesn't work (or at least won't have an excuse for bad) because of a bad connection Contact). This is the perfect complement to the diamond files I have for cleaning trailer connectors. Files are almost too aggressive unless the connectors are corroded. These brushes are just right for a quick clean to remove dirt/debris/spider nests. Get both and you'll be able to connect no matter how dirty or corroded the connectors are. This is a set of wheel brushes and non-aggressive files for cleaning the types of terminals commonly found in trailer plugs, both round and flat. Ideal for quick cleaning but not aggressive enough to remove heavy corrosion. 5 minutes with both and all my trailer lights (and brakes) are working as they should again.

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