Rev Counter

Hi-

I've got an early '90s Disco 200td lump in my Defender 90.

-I want to fit a rev counter to the cluster, and I thought that as the engine originates from a Disco (which had a rev counter as standard), I might be able to simply 'plug in' the rev counter into the loom....just now to find what to do!

-Any ideas or hints? I havn't got a wiring diagram or anything!


Thanks, Matt.

Rev counter runs off the spare spade connector on the alternator.