Why and how would you stop the revcounter from working?

[heraldcoupe]

An odd question I realise.
I inherited my late father's 1991 GTi 8V last year. Though low mileage, it hadn't been looked after beyond necessary servicing.
Over the past year I've done a lot to improve matters, but there are a few things which don't work which I ought to deal with. Neither the oil pressure coolant level warning lights work, or the MFA or revcounter. My mother (who doesn't drive) mentioned that my father had the revcounter disabled as he found it confusing, but I know no more than that. it may also be a complete red herring - as a non-driver with no mechanical sympathies, she may have misinterpreted something else which was done.
I wondered if there is a single fuse or plug disconnected which might disable these functions. Going through what wiring diagrams I have though, I can't see anything obvious which would disable just these, without affecting other functions.
Before I start pulling the dashboard apart, can anyone think of there's anything simple that I've missed?
Cheers,
Bill.

[gazareth]

hi take off the big panel below the steering column and have a look up behind dashboard to the right of the steering wheel to see if the main plug has been disconnected.

[heraldcoupe]

The main plug under the revcounter is in place, I unplugged and re-connected it to make sure the contact was good - no sign of anything odd here.
There are three unconnected terminals in the area of the fusebox and relay board, but nothing which has an obvious location it should be returned to, photo below:



I thought I'd found something with this empty spade connector on the coil:



Checking against the (Haynes) diagram though, all four of the expected terminals are in place though, as well as the HT lead.

Cheers,
Bill.

[dragonfly]

This any use: http://www.a2resource.com/electrical/CE2.html

[heraldcoupe]

Thanks, that could be very useful.
I won't get a chance to do much more until later in the week, but I will be back.......

[weazgti]

2nd fuse from the end pulled stops the clocks working