B3 Speedo, Rev counter, MFA not working, Oil light stuck on

[PassatGrandadWagon]

Probably sounds stoopid, but does anyone know if this is a general problem on B3's?
The ruddy oil light has stuck on, the speedo, rev and MFA aren't working. I changed the door speakers last night and I'm not sure if it's related to that or not..

I'm hoping it's a blown fuse but haven't had chance to take a proper look at it yet..

It's been a few years since I last had a B3 (1.6TD) and it was truly the worst car I'd ever owned.. Dodgy electrics, rattly plastic trim, dodgy alternator and generally a right old heap of poo. I was so happy when I scrapped it and got a GL5 B2 as a replacement.

Anyway, I've bought another B3, as I've been impressed with the few modded ones I've seen recently, in the UK and in europe,but I'm starting to think B2's and B5's are much better than the B3/B4 generation in trems of build quality and reliability.