I purchased my 73 dodge Power Wagon in 1975.  During the past few years I have discovered some unique dodge problems:
Gauge problems : I had gauge problems almost from day one.  Mostly noticed in the fuel gauge.  Finally I discovered the problem.  The circuit board on the back of the gauges has pressed connections.  After time (accelerated by salt) the connections become oxidized and no longer make
a good contact.  I repaired mine by soldering all of the connections. The gauges all began working properly, when reassembled.

I will be including more information as time allows.

Ron

Electrical Schematic
Transfer Case