TOPIC: Help, Tach issues, I can,t figure it out!!

Help, Tach issues, I can,t figure it out!! 15 years 3 months ago #12039

carpromo
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Hi, I have a 1971 Glastron GT 150 with 80HP Merc , the tach is a
vintage airguide. When I hook up the green and black wire, the tach reads full tilt 7000 r.p.m. I have an NOS airguide and hooked it up figuring the tach was bad. this one does the exact same thing and is new. I have no idea why it just goes pegged! Please help and thank you in advance! Scott

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Re:Help, Tach issues, I can,t figure it out!! 15 years 3 months ago #12044

dave bernard Offline Platinum Boarder Posts: 1471 Karma: 95 Thank you received: 30	might need a sending unit. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
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Re:Help, Tach issues, I can,t figure it out!! 15 years 3 months ago #12048

MarkS Offline Moderator Posts: 5348 Karma: 118 Thank you received: 5	Scott, are you using the Airguide model that's designated for Mercs? You might find this link helpful, it lists which models fit what, has instructions, etc.. www.classicboatwork.com/classicparts/gauges/airguide/airguideinstructions/Airguide_Instruct.html Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
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