So the last couple of times I've used my 3-month-old 7x16 utility trailer, I have had to monkey with the trailer plug a little to get the left signal working (brake & turn).

My parents used it for about a month or two to haul around their RZR with their Dirty Max, and my stepdad said he never had the same issue (joked must be a dodge thing).

The previous owner must have lived on a dirt road or worked on a farm because the area inside the plug seems to be a bit dusty.

So before I start ripping things apart, any ideas on what to blow in there to help clean it out?

None of the prongs look discolored, and none are bent or loose.

I want to try something simple before I start going all electrician on it.

When I mess with it, I typically unplug the trailer pigtail, blow into it, and then blow into the truck female end like a Nintendo game cartridge.

Doing that once or twice typically gets it working all over again.

However, it will stop working.

Our last trip with it worked when I left my house.

After a day of riding, I noticed it stopped working again when I was backing into our driveway.

Should compressed air work?

Carb cleaner?