I mounted this one behind the driver-side kick panel. Because it is in a hardtop Jeep, I went with the cheaper, nonwaterproof unit Editor's note: PN 70107. In a Wrangler or something open to the elements, I'd put a waterproof one inside as well as outside. Trasborg is going on and on about a CB (10-4, good buddy!), a HAM, an aftermarket radio, extra power ports, a power inverter, and all kinds of stuff. Hopefully this keeps him happy for awhile.