Electrical problems, help needed
 

My 88 28' Excel has a fancy "waterproof" microswitch/relay dashboard instead of regular switches, controlling blower, bilge pump, lights etc.. And they work less and less as they should, sometimes they don't work, sometimes they start "automatically". I'm tempted to rip it all out, and make a new panel with ordinary switches, but of course I'd rather it just worked.

Anybody had the same problem? Any solutions? Thanks