need a new 12v alternator for my 13-bt (2 Viewers)

[AirheadNut]

Looks great! The mount looks especially beefy. I would definitely recommend upgrading the wiring with a larger gauge, but also keeping the factory wire as that will likely be where the voltage gauge and charge indicator light in the dash get power. What is the amperage rating of the new alternator?

 

[pradoblivious]

Looks great! The mount looks especially beefy. I would definitely recommend upgrading the wiring with a larger gauge, but also keeping the factory wire as that will likely be where the voltage gauge and charge indicator light in the dash get power. What is the amperage rating of the new alternator?

The new alternator puts out 110 amps. I'll follow up with part numbers and links.

I'm not really sure how the wiring is supposed to work on these, but I can tell you what I had before, vs what I had now (this is just with respect to the B/POS terminal on the alternator)..

Before I had a white, 8 or maybe 10 gauge wire, going from the battery, through the driver's side firewall and into the cab, feeding the positive bus on the interior fuse box, then continuing back out the firewall on the passenger side, and connecting to both the alternator, and a little accessory fuse-box in the engine bay. That's how it came wired after the engine-swap. I was too oblivious to know what it was doing before the swap.

Today I added a dedicated 4-gauge charge cable from the alternator directly to the battery, and kept the white wire on the battery-side only. So now it looks like this:

So from the battery we have a beefy red cable that never leaves the engine-bay and goes directly to the alternator. Then we also have the "original" 8-gauge white wire, going into the firewall, feeding the interior fuse panel, exiting back out into the enginebay on the passenger side, and feeding that accessory fuse box in the engine-bay.

 

[pradoblivious]

Specifics on the unit I bought.
This is what I ordered: Amazon product ASIN B00S6MOC1Wwhat arrived was part number 12536n, from "wai enterprises"

in case that link goes cold, here's a copy of the description text, and I'll put pics of the box, and amazon product details below.

New Alternator Replacement For 2003-2006 Isuzu NPR NQR NRR 4HE1 4.8L 290CI 110A 12V CW 3-Groove Pulley LR1110-501, LR1110-501B, LR1110-501BAM, 8972482970, AHI0145, 40044066

 

[pradoblivious]

Got it wired up and fired up today, seems to be charging GREAT so far. The belt alignment is about as good as it was before (even a tad better I think). Brakes work great too. The documentation it came with wasn't super helpful, It has a two-prong pigtail connector, so, figuring the left blade was the exciter side, I made a little jumper cable and gave the left blade 12v, and it started right up. I still need to get a proper pigtail for it, but here's a video of my current janky setup with the jumper, and the amp-clap showing 30-amps of output.



And here's a shot of the 4gauge charge-cable I made.

 

[pradoblivious]

PIgtail delivered today, along with a terminal protector I ordered. Both bought on amazon, works like a charm. Still waiting on some wiring loom, to make it pretty.

pigtail: Amazon product ASIN B0B35YX6SD
terminal protector: Amazon product ASIN B017E0869A

 

[pradoblivious]

All wired up.