Will not crank

[Kenthegreat]

Every now and then my engine will not crank over, and other times it cranks over normally. When it acts up it's like the battery is dead. I have a new battery, starter, gound wire(s), alternator. Has anyone ever run into an issue like this? I've tried everything.

[dmc6960]

Is this on 686 or 11617? Big difference. If 686 then it probably needs the starter circuit modification.

[Nicholas R]

Is this on 686 or 11617? Big difference. If 686 then it probably needs the starter circuit modification.

Definitely speaking the truth.

Also is it an automatic or a manual?

Here's the circuit; there's not much to it. I'd get a multimeter an put it in continuity mode and just check to make sure nothing is loose or shaky. There's only a few things it could be:
http://dmctalk.org/attachment.php?attachmentid=105&d=1306264553

[Kenthegreat]

This is 11617, and it's a manual tranny. I will check the starter wiring tonight. I also installed a new engine harness. So possibly a bad connection somewhere.

[nullset]

This is 11617, and it's a manual tranny. I will check the starter wiring tonight. I also installed a new engine harness. So possibly a bad connection somewhere.

It could also be a bad or failing starter solenoid.

--buddy