Fitting of Tachometer

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Fitting of Tachometer

08-06-2000, 10:29 PM

Jimmy Ng

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All Everyone,

I have just obtained a instrument cluster for my W123 (M102) 200, with a tachometer, my present one has only a large clock in its place.

Not being a electrical tech, I like to appeal to everyone out there for help in the tachometer connection. All I see is a pair of terminals labelled + and - and a separate terminal for the clock (I guess). I am wondering should the tach terminals be connected to the alternator 'field' coil or to the ignition coil?

All help and advice gratefully accepted.

Many Many thanks in advance!

Jimmy Ng
'82 W123 200

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