all i need to know is what color wire goes to what letter on the regulator? the letters are I A S F

 

s ---white
f----orange
i ---- green/red I think

a--- yellow


http://fordfuelinjection.com/public/...ALT_wiring.gif

 

thank you! 1 more thing i found odd. on the alternator is the little ground stud not supposed to have anything connected to it? there is a black wire going to the positive on the alternator. is this weird? and there are 2 wires with female connections going onto he male ends.

 

They dont always use the ground stud. anything else , take pics.

 

ok now im stummped. i just put 2 new batteries in the truck. took the alternator off and had it tested, it was good. put a new regulator in and it still wont keep the batteries charged. what else could it be?

 

The alternator charge wire should have a fuseable link. Check to see that it is not burned out.

 

which wire is that? can you describe where it goes,guage, color or something please

 

ok i found the fusable link and i put a lest light on each side of the link and it had power to both sides

 

Where did you get the regulator, most of the cheap ones are crap out of the box. Get a voltmeter and see what your putting out with everything hooked up. You should have at least over 13volts 14.4 is ideal. Try running a ground wire to the alt and see if that helps, mine does have a ground. Oh and the screw that holds the regulator down SHOULD have a ground wire on it because the reg needs to be grounded, but due to the plastic inner fender it needs the wire.

 

i will try running a ground wire tomorrow morning. the regulator is from autozone.where do you want me to put the voltmeter to be testing what?

 

Test your running voltage, just right on the battery posts is fine, you can also check voltage at the glowplug selonoid. If its at 13 volts or more you may just have poor batteries.

 

it tested 12.17

 

12.17 indicates you are not putting out anything on your alternator. Should be at least 13 volts, hopefully close to 14-14.5 volts. A cheap alternator test is to put the end of a screwdriver at the back of the alt at the center bearing. It should have a slight magnetic pull on the screw driver end.

It sounds as if your regulaotr is not working, did you put the ground wire from regulator to chassis?

 

Sound like you still have a problem, maybe diodes in the alt, which could drain the batts while sitting.

 

I had the diodes go out in mine when i jump started a guy at my work and he revved the truck once he got it started.