I sometimes get the same on my iPhone. My phone will switch back and forth from charging to not every second or two. If you're having issues, hold the power button and skip forward button at the same time until the radio resets.
I bought a 4x4 XLT dealer stock back in February without the tow package with the hopes of getting an aftermarket hitch. I still can't find anywhere carrying them yet. Is anyone aware of a company making them? Will the export model hitches fit?