wentriding last week w/buddy to breakfast couple errands,on way home by his house bike backfired then a lil farther down road shut off. pushed back 2 his house (uphill 2 my luck) tried starting but had nothing no headlights nothing. main ground good battery good, all fuses good including main on the starter realay. replaced starter relay cause it wasnt clicking( checked out of bike per manual). still nothing no headlights nothing. thinking now I.C.M. ....ANY IDEAS??