I am writing to ask about the wire harness used for the Ublox GPs unit. (Without the integrated compass). I have now twice had the GPS fail when I removed and reinstalled the GPS unit from the APM during maintenance. First time I thought my GPS was bad (had red LED but no Blue LED) and ordered a second unit. Real problem was traced to bad connections through the wire harness from the APM to the GPS. I think the problem is that to remove the wires from the APM (2.5 in your side-mount case) you must pull on the wires as you cannot grab any portion of the plug when inserted into the case and APM. I think the wire(s) are becoming broken near the plug when removing. Using a new wire harness establishes connections, but 2 out of 2 failures on the harness you sell when removing and reinstalling makes me wonder if these wires or plug assemblies could be improved- short of solder. I am concerned about the power supply connection from your Power Module connections to the APM as well. I would hate to have the power disconnected in flight due to this type of issue. Can anyone suggest a solution or a better after market wiring harness?