To follow up,,, Little metal snap cover looks like a toilet seat ;-)? Same kind of thing on 1/4 phone jacks. I've a sample comming, I'll let you know how it fits. The part number is 2c1072 from switchcraft I was also looking at one of our gps units for the field by rockwell,,, they have a really hi dollar connector cover, if I can run the info on that down, I'll pass it along. 'Grif' N7IVS