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We were able finish up installing the new 24v 200a alternator; removed the 3-12v lines: from batteries to manual disconnect, remote battery disconnect relays to LBCD, LBCD to alternator; reattached the 24v lines at the LBCD all to 24v bat, nothing attached to the other three leads, though left...

So, since the 12v/24v 100a alternator isn't providing 70 - 90a @ 24v the batteries are making up the difference?

I am sorry to hear this; backs mess with our core and thus everything we do–

The particular pulley depends upon the size of the alternator shaft and retention method: key, locking bolt, friction; matching the belt size and outer diameter, (assuming the new alternator requires the same rpm range to operate). We have a serpentine 8 groove belt, with a ~3" od pulley. Our...

Pulley arrived yesterday. Today we modified the mount and made an upper bracket. [edit: added a 1-1/8" spacer to fill the gap behind the forward eye. You can see it painted yellow below in post 27] Tomorrow we'll reinstall the modified mount and new bracket, pull the LBCD and remote...

I love this forum. So much solid information when I patiently look to learn and post less. Read the thread @GeneralDisorder posted, watched @Ronmar you2b, read his comments above and somewhere (thank you to whomever posted this hint) a comment about perhaps the spare getting stuck. After...

I think the AO trucks have the Polarity Protection Device (OP shows), though not an LBCD. Not sure that is an A0 schematic @Ronmar would know—

We are saying the essentially the same thing, except notice that only one connection is at P2, the rest are to P188. It would be nice to see the P2 pinout—

These pages show the CAT installed side (¿connector P1?) all in one place, the OEM side is liberally distributed about the other pages. It would be nice to find a pinout of the other connector, (¿P2 connector?). I still think the OEM tach was always run off the ring gear. Though the VDO...

Cat ECM pinout does show the tachometer feed on the OEM side, though I have yet to find it in the schematics. It does read in the J1939 feed to diagnostics. I keep wondering if it is in the connector under the windshield 'behind' the heater in all units, like in A0 units; and running off the...

Good thoughts— https://www.ceniehoff.com/Documents/Ctrl_Hyperlink/TG14_uid252021119472.pdf

We received a 24v 200a alternator and if I wasn't so busy working the dual voltage one would be out and bracket mods begun. I am wondering if the alternator shaft sizes will match, though am expecting I'll need another serpentine belt pulley for the new alternator before we can complete the...

REVISED Schematic concept 1.3 UPDATED in POST 82 Corrected (hopefully) wiring for 1– existing manual disconnect next to battery box; 2– deleted LBCD controlled remote disconnect next to battery box. Still working on best connections for a– wire 1471 (TL507) wire from 24vbattery side of LBCD...

I am far, far from an expert and know a little bit beyond nothing on these vehicles, though years ago with our caterpillar tractors I would have said. "Okay, we are good," with the readings in your video. I find as I wiggle the tester's lead on bolt heads, or try to ground on some...

As installed on our A1 with the Niehoff 100a dual alternator–

Unfortunately, so far I have yet to find a 24v heat pump for the habitat that I would install. That is likely pushing us toward adding a large DC to AC inverter /charger (Victron Quattro or Multiplus) to run a 110vac or 220vac LG or similar to heat and cool the habitat. We have have these...

That's just what we have on our A1–

Continuing to think about this system. With two separate 24v 100ah battery banks connected through a combiner is there any need for the LBCD or existing autodisconnect next to the battery box? A 28v 200a (5,600watts) alternator, provide 12v at PDP X3 with Victron 24/12 70a DC to DC converter...

Thank you. I understand your comments and they are well thought out. What brand 24v unit did you install in your habitat? I have thought a lot about the defrost. Recently tested it during our low teens cold snap with my wet dog riding shotgun. I learned that these trucks need to warm up...

Okay. Now I am feeling like I am working a 'flux capacitor' obviously I don't know the electrical as well as I wish. Reroute the manual disconnect before X1 leaving the batteries, alternator and starter all direct wired to each other. The LBCD is gone, so nothing to activate the auto...