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Old 12-04-2012
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Default older merc newer tachometer

Hi was wondering if any body could tell me how to install a newer tach on a 1972 mercury 800 thunderbolt,I have a mercontrol box with a three prong connection in front of it,here is a pic of the back side of tachometer,Thanks.
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Last edited by martinezalfo; 12-04-2012 at 21:37.
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Old 12-04-2012
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Russ T Hinge Russ T Hinge is offline
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It is so long since I did one but there should be no problem, the tacho feeds off the ignition pulse on No 1 plug so wiring is fairly simple.............Tremlett is the man for this.............
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Old 12-04-2012
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Default older merc newer

type tachometer in the search box mate.
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