C4 Cluster problem

Okay guys; need help... My 84 C4 instrument cluster has gone haywire. As soon as I turn the key it starts flashing erratically...like its on display. Not providing any information on engine\or any other functions. Is this a electrical nightmare or a simple change of component?

vr
cajunboyla :banghead:

Possibly a bad ground?

Thanks Rimmer; gives me a point of reference to begin with... :worshippy

It's hard to say with something like that... Have you changed anything recently that would directly affect the cluster?