What happens when it will not start?
Does it click, click, click?
Does it clack and then nothing?
Is it completely dead like there is no battery in the car?
Throw us a bone here.
If it Clikc, click, clikcs, it is not getting enough complete current flow. Battery is down or the ground for the starter is not what it needs to be.
If it clacks and then nothing, the starter is not turning with the delivered current. Possible hot or bad starter.
If it is completely dead, you are completing the ignition circuit to activate the solinoid.
Hope this helps.
