Welcome aboard Captain Morgan!!!
Has diagrams in the their parts catalogue, but they only go back as far as 1993.
There should really only be a handful of switches:
Forward Bilge (If there is one in that model)
The horn will be an Off-Momentary ON action with a spring. The rest just turn them on and walk around. There will be several Accy. switches that do nothing. If one of the items on the list above does not work, then it is broken