I'm talking about Raymarine
multi- pinned plugs, where a female plug
has multiple holes, each smaller than a tooth pick. Not sure that a wire brush could get in there.
I bought a dental tool kit and am going to try getting in each pin hole with a dental pick. I could see where a wire brush would work on the male plugs, but don't see where it would get to the bottom of each pin hole on the female plugs.
Thought there might be an easier way than a dental pick, hole by hole. Have tried several sprays, with no success.