Mariner 60, 3Cyl 2S - 5-wire vs 6-wire voltage regulator

[HughN]

Does anyone know if it is possible to use a 6-wire voltage regulator (of which there is an example in my desk drawer) in place of a 5-wire voltage regulator (of which there is a knackered one in the engine)?

Is it just the tacho wire that is the difference between them?

The wire colours and gender of the connectors are different but functionally they must be pretty similar - or not?

Thanks
Hugh