Not charging

[taylorv0000]

I have a 95 7.3l, it's not charging and no battery light. I swapped the alternator with a good working one from one of my other truck's and I checked all the fuses and checked the instrument cluster to see if I had a burned out bulb and nothing. Someone please help or at least point me in the right direction

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[gnxtc2]

Make sure you have +12v going into the alternator. Without 12v going into the alternator, the alternator won't charge.

Billy T.
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[taylorv0000]

There is

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[heavydoc]

12v should be on the little wire to excite the alternator field.

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[taylorv0000]

Witch wire, there's 2 white and a green?

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[Magnum PD]

Check the ground?

 

[heavydoc]

Witch wire, there's 2 white and a green?

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There should be a small gauge wire by itself. I'll take a pic when I get home.

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[taylorv0000]

Ok thanks, are you thinking far left of the alternator and above the output post?

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[heavydoc]

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[taylorv0000]

So you want me to cross it with the green wire or ground it out?

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[heavydoc]

It should have power when testing at that point

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[taylorv0000]

Ok, but what do you want me to try with the wire?

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[heavydoc]

See if it has power if not your alternator is bad.

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[taylorv0000]

See if it has power if not your alternator is bad.

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But like I said I swapped it out with a good alternator, my guess is it's some were in the cab

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[heavydoc]

But like I said I swapped it out with a good alternator, my guess is it's some were in the cab

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I must have missed that post. Some of those trucks had a fuse and or relay on the engine side of the firewall, but I think those were on the gas versions.

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[heavydoc]

Should probably find a schematic and see were power comes from.

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[taylorv0000]

Should probably find a schematic and see were power comes from.

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I do have a oem Ford 7.3l service manual, but it shows there's a fuse in the fuse block. But there's not so idk what to go by

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[taylorv0000]

I do have a oem Ford 7.3l service manual, but it shows there's a fuse in the fuse block. But there's not so idk what to go by

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[heavydoc]

Is your truck California emissions

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[taylorv0000]

No, I'm in MI

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