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All of the lighting, ~32A on a M1079, ~28A on a 1078. On the A0, it provides the power for the ign switch and VIM(neutral start), which controls 24v ign power. On the very early A0, the transmissions needed 12 and 24, somewhere in the late 90’s Alison made them either-or, and later versions in...

We loose a lot out of the dual volt running 60 of its 100A @12v(current limitations in the windings). With both legs Fully loaded by lighting and depleted batts, it is only capable of ~1950watts. 100A @ 24V is 2400W, so single voltage has ~19% more output available. if you are still running...

What Guruman said, not difficult at all. Ground 12 and 24v connections. It takes whatever is on 24v and outputs exactly 1/2 of that on the 12v lead. You can either connect it as a battery balancer, or use the 12v output standalone like any other 24-12 converter. I am still running a 100A...

What a concept:) yea Acella appears to have been reserving their products and services for the folks who buy their trucks… an alternator mount for a cat really isn't rocket surgery...

The battery connected to ground on its neg terminal is the 0-12 battery. The jumper from its + terminal to the neg terminal of the 12-24 battery(series jumper) is where you connect the 12v line. It can connect to either end of the series jumper(+ terminal on 0-12 or neg terminal on 12-24 batt)...

There should be a diagram inside the box lid, all the trucks are basically the same...

Where is the 12v lead hooked now? If you have four group 31s installed like the original 6T batteries. I suspect all 4 batteries are tied together (+-+-) in the middle. That is where 12 is connected. Ground is typically furthest from the frame. 12 is where the outer 0-12 batt + terminal...

Group 31 is typically between 900 and 950 CCA(0F) and are over 1100 at 32F and above. ~100AH@20hr rated capacity. My 3116 pulls a brief peak of 290A and a sustained 157A while cranking. That was engine cold at about 60F. Cold thick oil would bump this up a little. Heat is your friend…...

Yep, thats what I use also…

But when combined with the truck loads, still too much load/hard on the alternator if they get behind. A pair of 31’s is what Cat specced for the equipment that use these engines…