Hey, I was looking into the wiring from my alternator and found it's all cobbed up. Does anyone have a wiring diagram for the alt on the 6.9 engine?? There are three wires comming off mine and there were about three more connected to the main one off the alt. Where are they going?? And info will help. Thanks.
If i remember correctly the large one goes to the battery and electrical system the 2 smaller ones i beleve go to the regulator but i can't remember off hand.
Scott
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Should'a bought a Ford!
GM service dept. honesty of a car dealer efficiency of the Government.
86' F250 6.9 4spd 3/4 ton - oil cooler rebuild in progress!!!
89 Taurus - Can't complain for $200 It has a bow tie cuz you wanna give it away
Well I took the alt to autozone and had it tested. It tested fine. Came home and threw it back in and drove down there. Not charging. I don't get it. I went over the wiring from the alt and it all looks good. What am I missing??? The power line off the alt should go back to the starter relay right?? Does the alt need a ground wire?? The way it was before it did and it went to the neg battery terminal. I have the field pole connected to the regulator. ANy ideas here???
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85 f-250 6.9 c/6 4x4 d60f/d70r 8 inch superlift 325/85/16 xmls straight pipes with 5" twin stacks soon to be turbofied aka big nasty!
Do yourself a favor and lose whatever alternator you have now. Replace with a 3G alternator that cranks out 130 amps and has internal regulator. You should have the large-case setup, so you can harvest the proper 3G from a 3.8 Taurus in your favorite salvage yard. I have this in my truck, charging through a 1/0 welding cable and a 175-amp megafuse, works like a charm!
__________________ Real trucks rattle! '90 F350 XLT Lariat, reg cab, dually, RWD, 4.10s, factory tow package, and lots of add-on goodies.
Quote:
Originally Posted by 94shorty
Check codes BEFORE throwing money at replacing perfectly good parts. Slowly and systematically, test, confirm related items are working correctly.
Early to mid-'90s, like '92-'94, you need one with a 3.8L motor as this is the one with the 8.25" bolt spacing that should fit your alternator brackets. Just to make sure tho, measure up the distance between the pivot bolts of your current alternator - if tis 7" then you need to look for a 3G alternator from a Taurus with a 3.0L engine.
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'90 F350 XLT Lariat, reg cab, dually, RWD, 4.10s, factory tow package, and lots of add-on goodies.
