Hello, I bought a 2007 Fiat Mutipla on Sat 3rd Oct. It has the dreaded WAIT on the radio display. I know you have to leave the ignition and radio switched on for two hours to enable you to enter the code. My question is, can I connect the blue wire(ignition +) to the constant + red wire so the radio switches on without the ignition switch turned so only the radio is draining the battery. Will this allow the radio to countdown the 2 hours ? Any info much appreciated.