So I bought this old Unicode (Univox?) Bass amp head which doesn't power on. I opened it up and there are some wires from the board which are not connected to anything and neither the power cable now the power switch are  wired to anything. Unfortunately there is little to no information on these amps so I'm looking to see if anyone can help me figure out where all the wires go to get it working again. Can provide pictures and any other information as necessary. Thanks!