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Alternator questions


akshep

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well my alt died so i got a replacement today. i installed it but have no idea how to wire it. i looked at the wiring diagram but if someone could dumb it down for me i would appreciate it. oh and its a 1984 2.8L 4x4.

thanks in advance
 


Will

Will

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It's not the same as the old one?
 

akshep

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no there are more places to hook up wires on this alt than the last one. the wiring on this truck is a nightmare. There are 4 wires that hook up to it i got the ground hooked up but that is about it.
 
Rammunition360

Rammunition360

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well shit son hook em all up diffrent ways till it works
 

enginepaul

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I don't have a camera handy, but if there is a Ford anywhere near you, look at it - the colors and positions are probably the same or very close. If your wiring harness isn't damaged - and you have the right alternator - it should only go one way.
 
Will

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Do you see little letters cast into the alt where the terminals are?

Most likely you have an internal regulator so the wires you should have are a charging wire, a sensing wire, a charge indicator wire and the ground. The charging wire probably says B+ or Bat and goes to the starter relay. The sensing wire probably goes to power dist. and the indicator wire goes into the instrument panel. There may be a terminal for a radio noise suppressor too. I don't know what the other markings are. Most engines have a big plug that encompasses it all. If you could tell us the markings it would help.
 

akshep

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Will said:
Do you see little letters cast into the alt where the terminals are?

Most likely you have an internal regulator so the wires you should have are a charging wire, a sensing wire, a charge indicator wire and the ground. The charging wire probably says B+ or Bat and goes to the starter relay. The sensing wire probably goes to power dist. and the indicator wire goes into the instrument panel. There may be a terminal for a radio noise suppressor too. I don't know what the other markings are. Most engines have a big plug that encompasses it all. If you could tell us the markings it would help.
Click to expand...
i'll take a look when i get home from work
 

Crunchy

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Call the place you got the alternator, ask them, I'm sure they can help.
 

enginepaul

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From the 1985 Ranger/Bronco II Electrical trouble shooting manual:
Black /Orange stripe wire to the terminal marked "B"
Orange / Light Blue stripe wire goes to The "F" terminal
White / black stripe wire goes to "S" terminal
The unmarked terminal is ground; that may be the case

These color code are used in other Fords too.

good luck
 
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