you need to have all the wires hooked up. if the Opus doesnt shut down then its not likely that the problem is due to a short from the case. Either way, you could take 2 minutes to put some tape over that section to see what happens. If that doesnt work, it most probably because the Opus is not getting the signal to shut off/on. Do yourself a huge favor and invest in a multimeter. This will help you troubleshoot, allowing you to make sure each wire is sending out the correct voltage at the right time.