I have a black and white wire hanging from the right side of the printer and a hex dump message on the printer and don't know what to do
The next move would be to write down the hex code (or take a picture), turn off the machine, then figure out why there is a wire hanging.
The wire may not have anything to do with the problem, so keep an open mind. it sure sounds like the sort of thing which can cause that sort of problem.
Wires generally are cut to fit, so there is probably only one option to where the wire is intended to go..