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Went and had o'reilly's test it and the guy there said there was a bad diode in it. Got the money back and went to Autozone and got a Duralast brand instead of Ultima and there isn't any voltage drop unless I blast my subs full tilt. The stock 95 amp alternator ran all that stuff just fine so...

It's an Autocraft Gold group 65 850 CCA. Just replaced the old battery within the last 6 months so I don't think it'd be the battery.

Alright so I put the new 130 amp alternator in and ran the new wire, leaving the existing wire attached to everything it should be. When I put a decent load on the vehicle at idle (blower, brights, auxiliary lights, wipers, brake lights, etc), the voltage will remain about 14.5 up until it hits...

Alright that's what I was thinking but I didn't wanna go messing with anything and mess something up without being 100% positive. If it was only that I was upgrading the alternator then I probably wouldn't think anything else about it, but I've got a stereo in the back that I have to power...

My Explorer came stock with the 95 amp alternator which just isn't cranking out enough juice for the stereo I have. I'm looking at upgrading to the 130 amp version which from my understanding will fit, but in addition to that I'm also adding an additional run of wire from the alternator to the...