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Just make sure they ground the alternator to the B- terminal and not the case on an isolated ground alternator.
@Tow4 I feel silly asking, could you explain how to do that/check that?
There are 3 terminals on the back (ODE) side, B+, B- and tach.
I went and had both batteries and both alternators tested at O’Reily’s. The batteries passed, but the Passengers Side Alternator failed. That is the one that I just purchased from Hillbilly Wizard. I also have 2 extra alternators: one was recently rebuilt locally and the other is the one that was in the vehicle when I tested it.
You're doing great making a good effort to diagnose your problems. Don't get down just continue to persevere. You will succeed. I doubt your mechanic stripped the bolt. He told you about it, and that was the right thing to do.
From the looks of your pigtail wires that plug into the alternator, you appear to have a good size nick in the wire. You also appear to have a lot of build up of old grease. I would pull the pigtails off the alternators and replace them with new ones. AC Delco PT2288 Alternator Pigtail $8.46 at Amazon.@Keith_J
Here’s a pic of the Brown Wire. It isn’t terrible, but I will end up cutting the wire and crimping it.
I was also able to figure out what is what on the back of the alternator. It’s actually written on there. Imagine that!!
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With key on, engine off, measure voltage on the red wire in the 2 conductor block. Should be 24+ volts to ground. Same with the brown.
I cleaned (via electric spray cleaner, a steel brush and steel wool pads) the crap out of all the connections to the Positive and Negative Bus Bars. The only one I didn’t take apart and clean is the stripped Bolt piece. I just tighted it as much as possible with my fingers. I suspect that the cable to the stripped bolt is the Ground Cable. I noticed the other end runs out of the engine compartment down near the frame on the passengers side and up into the rear rear of/near the cab. I may be wrong??
Before I forget, any idea why my Turn Signal Lights are both now ON when I turn the lights on at night? They weren’t doing this before.
@Squibbly This is Awesome! Thank you for the video.Here is one of my infamously bad videos.
I test the batteries with the engine off, and at the alternators.
Then I test them all with the truck running.
I don't usually unplug the regulator to check from there because I figure the reading at the posts should tell me what I need to know.
Mistakes everywhere, but it's hot out and I got stuff to do.
Your front battery negative may be on the other side of the battery. I flipped mine around from how it originally was because it made more sense and I'm not going to accidentally touch a ratchet to the front battery+ to the body by accident.
I also know I'm supposed to have post covers on those alternators, but I like living dangerously, and I haven't gotten around to it.
In this case I actually have a battery reading low with the truck running, but it's good at the alternator posts, so I probably have a dirty corroded connector someplace....or I need to pull the regulator plug and test per @Tow4's great instructions, but this should at least get you started in the right direction. I'm not too worried about it right now.
Take off all your jewelry when you’re playing with 24v system, unless you want a nice tattoo of your jewelry on your body, like the guy from Raiders of the Lost Ark that picked up the hot Staff of Ra top.
The most important tip is … don’t die.
Perfect! I already ordered a New Plug to replace the nicked up one. It should be here tomorrow. In the meantime I will test both alternators while the vehicle is Off and while it’s Running. I’ll report back.
@Squibbly any idea why my Turn Signals are both On when I turn the lights On?
