Found this in the owners manual:
"Check the 12-volt outlet fuse size. It must be rated at 15 amps or
higher. If the amperage is not sufficient, install the optional 12-volt outlet
kit. (Refer to the “Vehicle-Specific Components” section.)
• If the fuse is of sufficient size, unplug the break away harness connection
at the ICX transmitter. If the fuse stops blowing, you have a short in
the break away wiring harness. Inspect the wire for possible grounding."
I'll try unplugging the break away harness and see what that does. Thanks Everyone.