Airguide 653 Tach wiring diagram

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  • bob-d

    US Member - 2 Years
    Replies: 440
    Topics: 92
    #263999

    Just picked up a vintage Airguide 653 Tach with the magneto sending unit. I plan on using it on a 64 28HP Evinrude. I looked all over the web, and found nothing on this model 653. Plenty of info for 653A but that model has the separate sender with wires coming out of it.
    Here is what I have come up with so far:
    The two top poles on the sender go to the + and – on the back of the instrument.
    On the bottom of sender are two terminals, M1 is ground, M2 is the signal from points.
    The hookup that’s throwing me off on are the right side terminals that state “Use link for two cylinder, remove link for four cylinder”.
    Does anyone have any idea what they are referring to?
    Thanks,
    Bob D

    1A56CA2B-13EB-40D1-B0C8-0C5AF770E1FE

     


    dave-bernard

    US Member - 2 Years
    Replies: 1851
    Topics: 28
    #264003

    link would be a jumper wire between the 2 posts for 4cyl. leave it of for your 28.


    bob-d

    US Member - 2 Years
    Replies: 440
    Topics: 92
    #264004

    Thanks Dave, now I know link= jumper.
    The tach was hard to find,and I didn’t want to short anything out.

    Bob D

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