looking for help/ advice
 

i have totally have ran out of ideas as to whats wrong with my motor in my motor home so here go's nothing ok i bought a 1979 dodge motor home it had a 440 in it the 440 was total garbage so we put a 318 in it and the van that the 318 was in ran well there was no problems with the motor so the 318 is now in my motor home and now when i turn the key it starts but as soon as you release pressure motor shuts off we have cylonoid we have checked everything we could think of and ideas or thoughts would really help and be appreciated thanks

Something wired wrong in connection to the ballast resistor

no that's not the problem i have replaced the ballast resistor 2 times and still the same thing there is only 2 wires and only fit one way

Mopar makes 2 different distributors a 2 wier and a 4 wire. what is happening is it is starting on the start pickup coil and as soon as you let off the key it wants to switch over to the run pick up and dies. It either is a bad pickup or it is not plugged in.

start mode wiring and run wiring
 

check the wiring and make sure you have everything wired correctly. the start mode has its own ignition circut. it maybe the ignition switch.