So the ultra classic I traded for completely left me stranded. It was having issues running but then died while I was in 4th gear and that was it. I decided to go ahead with a carb swap. I bought the pingel tank conversion, petcock and an ultima single fire programmable ignition kit. I'm going to be running an s&s carb that a neighbor is donating. Question is, do I need to unplug and un-bolt all the sensors and ECM? Will unplugging all that affect my fuel gauge, radio, air temp and all? I've tried reading other threads and educating myself but I'm struggling here.