Best way to clear grit and sand out of 7 pin plug??

A can of CRC contact cleaner will blast out the grit, improve electrical connection and leaves no oily residue. You can get it at most auto stores.

Get a can of computer keyboard duster (the compressed air in a can) and blow it out.

schlep1967 wrote:
I would not use any spray until you get as much as possible out with air. Wet sand sticks unless it is very wet. Add in an oily mixture like wd-40 and it will stick forever. If you are talking about the pigtail I would disconnect the battery in the trailer, unplug the camper and dip that pigtail into a bucket of water. Move it around, shake it, force water into it maybe even use a hose to flush the sand out. After it is clean hit it with the air to get it dry. Then add whatever you use on your pins normally. But if you are going back to the sandbox I wouldn't put any lubricant in there unless you plan on putting a plastic bag over it when not hooked up. And it wouldn't hurt to wrap it with plastic when it is hooked up.

Agreed, as long as you aren't trying to use it immediately, hit it with a strong spray of water (even a pressure washer).

The plug is intended to live out in the weather, so as long as you give it a chance to dry out a bit before use, it should cause no harm. (if you are traveling in a rainstorm, it's certainly not going to keep water out)

Anything oily just tends to attract more dust and grit which is then even harder to remove.

Pigtail end unless it is a molded end disassemble it and clean with compressed air and vacuum. If molded unit I would blow and vacuum as much as possible
, then contact cleaner.
Vehicle end disassemble and blow out.

I would not use any spray until you get as much as possible out with air. Wet sand sticks unless it is very wet. Add in an oily mixture like wd-40 and it will stick forever. If you are talking about the pigtail I would disconnect the battery in the trailer, unplug the camper and dip that pigtail into a bucket of water. Move it around, shake it, force water into it maybe even use a hose to flush the sand out. After it is clean hit it with the air to get it dry. Then add whatever you use on your pins normally. But if you are going back to the sandbox I wouldn't put any lubricant in there unless you plan on putting a plastic bag over it when not hooked up. And it wouldn't hurt to wrap it with plastic when it is hooked up.

Boomerweps wrote:
WD40 and a flat blade screwdriver. Use the screwdriver to open the connector blades. Wash it out with WD40. Then blow it dry.

WD 40 was designed to displace water on Electrical connections (WD=Water Displacement) So a very very good suggestion.

IF you are talking the SOCKET (Female holes) a small drill bit might work better than the screwdriver but either will work with enough WD-30 to flush it out. If you are talking the PLUG (the part with prongs) then the screwdriver is likely best.

When not plugged in a "Cap" over the beast might not be a bad idea.

After the WD-40 has basically gone away there is a product called DE-OX-IT (Give WD at least a month) and I'd spray 'em down with that as well... 5 or 10 if the contacts are fairly clean (DE-Ox-It comes in many "Strengths" from 5 to 90 or more. the bigger the number the bigger the $$$ number. it refers to the strength of the de-oxidizer in the spray)

Contact cleaner. Spray the hell out of it.

WD40 and a flat blade screwdriver. Use the screwdriver to open the connector blades. Wash it out with WD40. Then blow it dry.