No start condition

[hdjpcp]

Ok folks, tell me your ideas about why I have no juice to the starter. I've got my 72 with 350/TH-400 all back together after an engine and tranny rebuild. While the power train was out I went ahead and put a new engine harness in. Now, all bolted and wired up, I've got zero juice to the starter. I turn the key to on, everything is ready to go. I turn the key to start and it does nothing. I mean nothing. What's really puzzling me is the attempt to start it kills all circuits. The display on the radio goes out and when I release the key from the start position, the radio memory is wiped out just as if I had disconnected the battery. I'm looking for suggestions about where to start my search for the source of the problem.
John

 

[vigman]

Will post tonight

My book is at home..and I'm at work

But I would start @ the Key switch and work you way back the logical sequence is the following.

Start line

Key Sw get's hot from Batt
I believe large purple comes off key switch.
goes to automatic Park/Neutral switch
goes to firewall
goes to starter

I assume you just pulled the engine/tranny out & rebuilt it.

You replaced the foward wiring harness ( from firewall )

Everything under the dash is the same.. and you were having no problem.

Where did you get the harness?

Mike

 

[vigman]

Almost correct

Ign 3 ( orange 12 gauge wire)To switch/From Batt
Sol ( other side of the Ign switch)
Purple/White
To
Park Neutral switch
From
Park Neutral switch
Purple

to firewall connetor ( left side top/wire side)

Need rest of book to continue...

BUT
the purple wire on the other side of the firewall connector should home run to the solonoid.

Mike