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It has to do with heat dissipation. All wires have resistance and will creat heat with current flow. If it cannot dissipate that heat it will damage/melt the cable insulation. That is one reason for those amp to cable gauge calculators, acceptable heat management and acceptable voltage drop...

Yep, you would definitely want to insure the batteries never get dis-connected from a running alternator…

Yea the worst case truck 12v load(M1079 with all incandescent lights on) is just over 33A@ 12v or 17A@24V via a victron…

70A @ 12v = 35A @24v. Both together will pull ~70A@24 if they are ever maxxed-out. using the wire calc and 90A(the truck only uses ~10 or so @24v) 6AWG would be good for 20' at 90A load, so 4AWG should be more than fine for 24v up to the cab feeding 90A. here is a link to the wire gauge...

Well the air brake protection valve over the rear axle(passenger side) should limit flow to an unpressurized system/if a glad-hand cover falls off/is left off, or a line fails/leaks, but that is the purpose of the rear emer glad-hand, to charge air tanks and release the parking brake on a towed...

The rear glad-hands MUST be capped and sealed when not actually connected to a trailer/towed vehicles air system... Depending on your controls, air coming out of them would be normal to feed a towed vehicle, so cap them.

The Allison is continually learning and relearning/adapting its shift points. You can force it to drop,all that learned info and relearn them from scratch with a power-on sequence. But it will end up at the same end point eventually. You mashing down the pedal tells the trans controller you...

Yep, the bussed data has some cool options For an engine wi0th an ECU. The WTEC 2 comms are I believe to their own standard, its probably similar though. For comms with it, they spec a particular Allison pro-link cartridge, or the use of the Allison doc software. I havn’t looked into the...

AO trucks: "Busses? We don't got no stinking busses"...:)

I havn't come across one that I like yet. There are of course drain plugs but kind of exposed on the bottom of the control module. All the other ports I believe are pressure test ports so might not have any real fluid flow there. I have not seen one indicated specifically for temp sense...

Planning on it, working on a location for the sensor. There is a oil sample port on the trans fluid line to the heat exchanger/cooler but it is small(1/8NPT) but that seems like an ideal place to sample. might have to put a T fitting and a small bleed line back to the transmission to create a...

Cool, lockup down into 2nd, thats good news…

As long as the alt can support them:)

Well i don’t know about forum lore, but I gleaned that lockup information from an Allison Freightliner lecture, linked below… The Ex brake may stay engaged, but is the TC lockup still engaged? It would make sense to do so and retain good engine braking right up until a stop is...

IMO AGM batts are a little overrated. They do deliver a greater CA per pound, so in a vehicle where weight is important, like an airplane, boat or quad/motorcycle, they make sense. They are a little more resilient to being pounded on, so again a quad or a UTV they make more sense than a...

Clean em, coat them in silly grease and send it… they are NOT corroded where it counts…

There is a WTEC 2 config(not sure about wtec3) for manual or auto TC operation with a manual on/off setting when in manual mode. You of course would not want to try and bring the vehicle to a stop with the TC manually locked, You could probably use a latching relay powered by the de-energized...

Plate, and put the turbo in a fabric cover. Probably a good idea for a rock shield on the outside since it is on the outside of the frame…

Yea heatshield…

On the A1R the ECU automatically controls the ether application based on what its sensors see. As for deleting it. Simply remove the nozzles from the intake manifold and install plugs, remove the hose and unplug and remove the ether canister and valve…