You won't find a true electrical schematic in any of the literature published for your 65. Some user manuals have floor plan diagrams showing outlet and light locations with one-line diagrams showing the circuits. They are some help, but nothing like a real schematic.
I use a toner/probe to chase wire when I don't know were pairs go. These are kind of expensive, $80 or so. Another method I use is a 9 volt battery and an 6 to 14 volt automotive test light. Put the battery on the pair at the circuit breaker and go to the non functioning termination points and probe each one until the light comes on.
Be sure to disconnect from shore power(110volts) and disconnect you 12-volt battery to avoid suprises and false signals. Electricity can kill.
-BobbyWright (the Forums Resident Safety Nut)
-"You want to make it two inches - or, if you're working in centimeters, make sure it's enough centimeters for two inches."-Red Green