I'm so proud to be part of this group. It is extremely helpful when troubleshooting my foxbody. I am having charging issues with my car. A previous owner did the 3G alternator upgrade on the car. Shortly after I bough the car, I had to replace the alternator because the charging would drop to 8 volts and fluctuate wildly. I bought a new alternator and installed it. It would normally charge at about 14.5-14.9 volts, too much I know. I am now able to start troubleshooting. I followed this thread: https://stangnet.com/mustang-forums/forums/fox-5-0-mustang/ from a while back and have some issues. I have checked all my grounds, cleaned them and now have no resistance between battery and engine block, engine block and chasis. Following the above thread, I have a fully charged battery. When I turn my key on, the battery light and AMP on my dash do light up. I check the green/red wire for 12V and get 0. I opened the wire bundle from the install, the yellow/white wire just comes out of the splice. While re-doing the splice, the yellow/white touched the alternator and sparked. It is a live wire. The white/black just goes from the D shaped plug to the single pole plug on the alternator. Is my car wired improperly? Am I missing something? Thank you for your time. My car is a 1989 Mustang GT 5.0. Mostly stock, no real modifications that I have noticed.
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