Lets see here:

3 means a 1963
C ........Conventional Cab
65....identifies the series
3......Chassis-cab
S.....St. Louis , Mo assembly plant

Last 6 digits represent the production number

I don't have a wiring schematic for the 63 so I can't help with the full time hot wire. The "R" terminal on the starter solenoid is a Resistor terminal and usually went up to the coil "+" terminal so full voltage reached the coil when you first start the vehicle. Then when it's running the current comes from the ignition wire to the coil.


Joe