wontcrank
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wontcrank




First dont guess and buy parts. next time you are tempted to solve problems that way bang your head against a brick wall till the thought disapears. get a test light  and have some  one hold the key over and trace the power to see what it wrong. If it is a bad ground as suggested then with the light clipped to a good ground on the body and the sharpe end of the lamp touching the engine the light will light. If the ground is good it will not light (body ground to engine ground test)
Check to see of the start switch is sending power to the relay by having someone hold it in start postion and testing with the sharpe pinty end to the relay wire . if you dont now which one  just check each one in turn as they cycle the switch at least one should light inthe start position and go out when the igntion switch is released. If that is Ok check for a starter relay ground  same way as you checked for engne ground .
If the ground is good but the starter relay is not clicking  check the brown wire with the plastic clip around the side of therelay  (usually the wire closest to the engine). witrh the test light clip on a know good ground remove the neutral saftey switch wire and putthe pointy end of the testlight to the prong. it should light when the ign switch is in start.iof it does. temporaily jump that prong to ground. If it starts then the neutral saftey  switch is not properly adjusted. (Shift linkage controls this so you could put a hundred engines and trans in and it still would be the same. )
If the relay is clicking then put the test light pointy end on the small terminal of the starter. it should light when the relay clicks. If it  does and there is also constant power on the big wire atthe aterter susect th starter. As kindly as I can say NEVER guess at problems , always test. It costs thousands less and only takes a minute.   I use a testlight for these tests as a volt meter at this stage only complicates a simple operation. 
BTW a real quick way to check bulkhead conector is turn the headlights on and wiggle the plug at the firewall
Don.
Author of
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Old Reliable (Mopar)
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