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

wopachop, you would not believe how sandy everything got, and I mean everything. The whole cargo area of my truck, which is covered with a good-quality A.R.E truck cap, is a mess.

That truck cap has kept out some major rain and snow storms, no problem. But the powdery dust of the Mojave Desert is uniquely invasive and abrasive.