I just installed an hour meter with the RPM gauge also. I got the bike running and the RPMs were reading good. I then proceeded to take the bike around the block and surely went over the 9999 rpm limit. I parked it and left it running and the RPM gauge was going haywire. Read 50, 1650, 500, 650, so I figure I blew up the RPM feature. My question is will the hour meter still operate properly??? or have I blown that up also???