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Well because of all the e1s and e2s you are going to have to trace out the cables anyway… you have two ground leads, one to the starter, one to the nato plug. Connected to the 2 battery terminals farthest from the frame that are jumped together. you have one 12v lead to the polarity box, it...

If you had a 12v alternator with an isolated ground(ground as a second output, not attached to its chassis), you could put it in series with a normally chassis grounded alternator, just like you can wire two 12v batteries, or 2 solar panels in series +to-. The batteries would be connected - on...

From what I have seen from Allison, they made that change somewhere in 95. the fact the A0 has no 12v switched ignition power pretty much confirms what you are saying, that none of the LMTVs are 12v only. Based on the year I was thinking it was possible, but the 24v only ignition aspect just...

There is no point really. I think ~95 the Allison went from 12v only to to 12 or 24v input, As mentioned new LED lighting doesn't really care. 24v only gauges are a little less available, but they are out there. Even our own gauges on the A0 are bastards, 24v gauges with 12v lighting…...

The problem is you don't have a 12v side and a 24v side, you have 12v out of the middle of 24… in this case it is a basic arithmetic problem Voltage on batteries in series is additive. IE 13.65 + 13.65 = 27.3. 27.3V coincidentally is the standard 24v regulator voltage setting and 13.65V per...

Well in the original system the hand pump will only pass fluid when you pump it. If fluid wasn’t returning to the hand pump, that sounds like a clogged return path that forced all returning fluid to the AOP. bleeding is fairly simple, lower the cab fully, disconnect the base end hose, place it...

the only one I can think of like that was a custom rig called the dual alt, but like the other dual alt configs proposed to replace our dual volt alternators, it suffered from the same series wired independently regulated alternator issues(impossible to maintain balance). Not sure how they even...

Yea but that is just the opposite scenario. Lowering the tire is like lowering the cab, it only takes a little fluid to get the tire or cab over the balance point… When raising the cab, the cab passes the balance point and finishes extending the rod end fully. This pushes that fluid back to...

Or you could partially restore the added volume of the original 2 reservoir system. Reconnect the line on the manifold valve circled in green to the bottom of a vented reservoir, and replace the vent on the pump with a sealed plug… also, you need to make sure you get all the air pockets out of...

That can’t happen unless your tires are over ~85 PSI or you are drawing CTIS air from somewhere else. CTIS(and the fan) pulls air from the protection valve and it wont let air out of the wet tank unless the tank pressure is over 85PSI…

Load and battery control DEVICE… No balancing whatsoever… it is a Polarity Protection Device(PPD) like used on the A0 trucks, with 2 added circuits. One circuit monitors alternator RPM(AC signal from reg) and 28v output. If the alt goes over 1500RPM but not over 20.5, it sends a signal to...

Yep, you should be able to see it come and go in device manager when you plug it in and unplug it, and what com port it is calling itself, so you can select that com port in the app if necessary.

Load battery charge dissconnect i think... or is it control disconnect? Its a polarity protection devjce with a very small pea brain and a large capacitor bank to catch the inevitable voltage spike when you disconnect the load from an overloaded generator...

well you said after it burps a time o two, it wont have enough fluid to raise the cab again right? Since the reservoir is at least 5oz smaller than what the cylinder and latch require, I suspect it is ingesting some air very near the top where you don't need much force anyway as you empty the...

OK, that device you pictured is the remote battery disconnect relay module. it is controlled by the LBCD, or a manual switch below the drivers dash(red guard switch cover). The LBCD monitors the alternator output and disconnects failed batteries from the alternator if the alt appears...

You can add more storage… remove your vented plug and install a hose barb. connect a hose and run that to the bottom of a second small tank/container. You could form one from pipe and fittings, you only need a few oz, and re-install that vent plug on top of the added tank/reservoir. This will...

Voltage regulator is solid state, so what exactly was clicking? Its a 2008, does it have a green circuit board type power panel, or does it have 4 PDM boxes? both A1s are wired the same IRT the lighting, battery 12 to CB70 to pin F on PX15 of the lightswitch. When EXACTLY does CB70 pop?

Well that reservoir isn’t large enough to take the 24+ oz from the cylinder base(and that returning from the latch cylinder), and by pumping when lowering, you are using the rod end of the cylinder as aux storage…

What Geo said. It is really only appropriate to charge with 24 when that is all that is typically being drawn from the batts(discharged equally)… a small balancer really should be used on these trucks when charging with straight 24…

The A1 still uses a high coolant temp switch, S26. Probably in the thermostat housing right front of the cylinder head. Fan control comes from the ECU…