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Well you can just bypass it. It has 4 terminals 24v battery, 24v load, 12v battery, 12v load. It replaced the original polarity protection device and still has diodes between the battery and load terminals. The LBCD added the function of monitoring the alternator output voltage and RPM to...

Manuals section at the top of the main forum home screen, present conflict vehicles...

No, the lbcd isnt really in the circuit between alt and batts, alt and batt cables are connected together on the batt terminals of the lbcd as a tie point...

On the A0, the speedometer is driven by a pulse signal(pulse per mile/pulse per shaft revolution) signal from the transmission That is derived from a sensor in the transfer case counting the gear teeth on the 26 tooth main output gear. I have not been able to determine if this signal is...

Yep K11 is one of those places where you have to have a 5 pin relay..

ok, I dont see fully charged batts dropping to 5v in one hour under normal properly connected operating conditions… I will say it one last time, do a 100A battery load test AT the alternator terminals(truck off) on both the 12 and 24v circuits. you do have 12 and 24 AT the alt right? This alt...

Was the truck ever certified as a NFPA vehicle?

Yea, out of stock. Midwest doesnt even list a price for one anymore, but they will sell you the one shown in the videos above for $300 with some fittings amd pigtail installed...

Well the default if it quits is fan on/running, so not a lot of liability. How deep are your pockets, last one I saw from any vendor was north of $600... i have a used one i will sell you...

You dont have a VIM. It used to be where they put the TCU under the pax dash. The TCU was with the control panel on the A0 that used a VIM. Your power comes right out of the power panel and any relays used for neutral start or any other output functions they installed in the power panel...

My first step in troubleshooting an lmtv electrical. Check battery 12&24 to chassis ground, then check panel 12&24 at the round test points(A0) or batt test point Bolts(A1 panel). Panel test points should be 1/2v less than battery. ~12.3/25.2 with 12.8v on all the batteries. Then turn on the...

It has an A0 idiot light annunciator panel...

Engine off, If you have 24v at the alternator 28v bolt to ground, that is coming from the batteries. You can get 24v from that bolt to apply to the exc terminal on the reg with a small piece of wire. But since the alt is going over battery resting voltage I suspect it is probably getting what...

Well as mentioned, they make noise, and being a less than 100% efficient gearbox, they make heat. Basic Sesame Street troubleshooting dictates that they should all make the same amount of noise and heat. hand felt temp or a basic IR heat gun is all you need…

that other adjustment on the back may be a selector switch to set a range, then the cal refines it… this looks like something that would be done on a bench with an electronic pulse generator set to mimmic the pulse output from the transmission at a given speed and adjust the instrument to that…

Yea the later ones use an integrated gauge system that gets its display info from the data bus…

I forgot to ask, have you run temps on the hubs? an overly warm hub might indicate an internal issue…

I was going to ask how you determined it was a high load. A bad connection will do the same thing with normal loads… R-15 is a resistor. On the A1 they did away with the need for 12V and 24v relays, and they used only 12v relays(4 and 5 pin). On the relay circuits that use a 24v source for...

Now if this were a regular alt, you could briefly jump the field(bypass the regulator) and drive the field to full saturation. And see if the voltage increases. If the alt was overloaded, this test would not increase voltage because it was already giving all it can. another option is to throw...

Ok, you should have 14.1 and 28.2 on the large bolted terminals on the alternator chassis. The forward terminal on the regulator is the alt excite terminal. You need at least 21V applied to that terminal by K11 after the engine has oil pressure to bring the alt online. The rear terminal on...