Help Im stuck!

Hi....

I have a small problem which I'm looking to solve!

I have just turned my car over for the first time in a few months and have no power to the dash, (=speedo, fuel guage, temp guage, etc etc)no brake or interior lights......apart from that everything works well...what needs replacing or attending to???

Thanks in advance...

TB

What year, model?

735iL 1992 model...thanks for your help