I've had some trouble the last few weeks where the radio and fans would cut
off. If I reached under the console and jiggled a fat wire, that was always
really hot BTW, the stuff would come back on. Being that it's winter I did
not investigate too much further. The other day when I shut the van off the
radio would not shut off. I figured maybe I crossed some wires as I just put
it in recently.  Then today I noticed that the fans stay on while the key is
out of the ignition.  OK, so now I investigate. If I the big black wire with
the yellow stripe above the fuse box in the center the fans and radio go on
and off. Also after much jiggling I've stopped the power to these items when
the key is off and now they go back on and off with the key. OK< I'm sure
I'm not so lucky as for this to be fixed forever so what is going on here?
Do I need to replace that relay that the black and yellow wire are connected
to? Is there a specific ground I should be looking at?

Thanks,
Bryan