A. Google "Jeep VIN" and you will find a lot of lists. Your tag with a date gives you a "when".

B. Back in 1970, many ignition systems put 12-volts on the coil for start, then switched in a dropping resistor to run. Just to try to start it, 12 volts to coil.

C. Get a shop manual!

D. Get a KWAS catalog too!