i was riding my trike a few days ago, parked it and went to work went to go for a ride yesterday and the bike has no spark at all i pulled the coil off and put the spare one on , but still no spark , i checked connectors , the grounds, and checked the on/off switch , i did notice i have a cdi box at the back with no part numbers , im thinking its a aftermarket one , could it have gone bad ? . or maybe the stator? any advise on where to go from here? or how to test wats gone bad ? and looking for numbers of how much power going to and from , all the way to the coil