This is going to be very vehicle specific but apart from being for a six cylinder engine the signal feed to the rev counter was totally unsuitable for my Cortinas old Rev counter. Therefore I made a hybrid by fitting the Granada donors rev counters internals into the Cortinas instrument cluster.
The donor rev counter is removed from its cluster. The needle, needle park pin and dial face are removed.
The Cortinas rev counter is also removed from its cluster and dismantled to its major components - Housing, Mechanism, Face.
The Granada rev counter is secured by three plastic pillars and securing screws. It has a small circuit board that protrudes to the side.
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