64 Chevy C10 - 350 small block - not starting

[elane352]

Greetings,

I thought it was time for me to pose a question on here since I have been struggling the last month trying to figure out why the truck is not starting.

Let me begin with some background

What I have done.
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* Replaced all wiring harnesses using American Autowire's 1960-1966 truck kit.
* Replaced the fuel pump.
* Replaced the alternator with a one-wire version. Unwired the external voltage regulator.
* Replaced the starter.
* Replaced the battery (dated 11/2017).
* Added a third brake light since the AAW kit accomodates one.
* Swapped out the old OEM gauges for a Dakota Digital version.
* Replaced the MSD 6 non-digital box with a digital version. (my lame troubleshooting effort probably resulted in me changing the old box when I did not need to do so).
* Installed a new heater core a few months ago.

What is happening when I put the key in the ignition and try to start
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* The starter turns and makes the typical starter sound. But the truck never turns over to start.


What happens when I place the key in the ACC side of the ignition.
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* Dakota Digital box LED light comes on like the instructions state it should.
* Dakota Digital Gauges
- Gas Gauge pegs a bit below half full (which I feel is an accurate reading.
- Voltage gauge reads between 12 and 12.5 volts.
* Radio comes on.
* Windshield wipers work.
* Thrift air heater makes a lot of crackling noise like before when turning the button. I just have not fixed things yet. So I am not too worried about that now.
* Head and running lights work.
* Tail lights work.
* Brake light works.
* turn signals (front and back) work.

Tonight I re-checked the wiring for the alternator and starter. It seems right based on the first two attachments. I also checked the wiring for the MSD box. I believe both are wired properly.

I have added writing attachments for the alternator/starer wiring; and the MSD so that you can see what I mean.

Regarding the MSD unit, I did not use the WHITE or GRAY wires.

Will look forward to any advice I can get.

Eddie