Ford 4600 Diesel Wiring Diagram

Ford4600KY

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I recently picked up a '78 4600. This is my first tractor, and I was hoping to find a wiring diagram so that I could trace down a few electrical issues I have. I have ordered the I&T manual, which is in transit. Is there somewhere online where I can find this information? Thank you in advance.
 
(quoted from post at 22:40:57 11/18/18) I recently picked up a '78 4600. This is my first tractor, and I was hoping to find a wiring diagram so that I could trace down a few electrical issues I have. I have ordered the I&T manual, which is in transit. Is there somewhere online where I can find this information? Thank you in advance.

This is the diagram I used on my 3500


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3500 has a generator with wiring harness being the same as 2-3-4000 series, 4600 has a alternator, Some of the basic wiring is similar but they are different.
 
This is the diagram I used on my 3500

The x600's electrical systems were different from the thousand series, which your 3500 is a member of.

The x600's all had alternators instead of generators, but they still had external voltage regulators, and I'm not sure what else might be different.
 

Thank you! Like a lot of older tractors, I have a bunch of plugs hanging loose and none of the lights are working. This should get me going in the right direction.
 

I have a 5900, which I understand is the same as a 5610? Would this diagram be the same? It appears very similar, except mine has a fuse box.

for some reason I'm not getting any current to my light switch. Suspecting the key switch but not sure. Need a diagram to troubleshoot better.

Thanks,
 

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