I'm still inclined to think it may be the ignition switch. You can easily check each contact point with an ohm meter. If any show an open circuit when swithched on, I believe you will confirm if it is the problem. Tom4bren also brought up a valid possibility of it being the rollover sensor, once again easily confirmed with an ohm meter...Dig into the online shop manual for guidance to both. Best of luck, I know it's gotta be gettin' old by now!