Thanks Thommo but I can't fit a rotax tachometer into my dash not enough room.
planesmaker, The signal delivered from the rotax signal coil doesn't deliver a signal that my 031 Vado tachometer can read, I read a post by Scott Henry back in July 13 where he had obviously been playing around with some smaller tacos, saw your reply to his post and was just hoping that he may reply to mine and I could discuss with him or anybody else for that matter any results fitting these tachos to rotax engines.