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I haven't. Why to look at 'D' neither ECU uses it?

It is a win assuming we keep our resistors healthy. The M939A2CTIS ECU (black) we received from a link @GeneralDisorder shared (thank you General) I believe is NOS. Came boxed and wrapped, still looks brand new. We originally saw 55# highway pressure. The unit connects right up to the DPA...

Welcome. This is a great site filled with folks willing to share their massive knowledge base. I learn something every time I visit—

Now for the rest of the story: After using our plaza Arduino CTIS ECU for a while we decided to swap in our Dana Spicer M939A2 CTIS ECU and reprogram it. The plaza unit is great and works fine we just want both units setup the same so to have a backup, and the Dana Spicer unit being push...

Thinking about how everything lines up and wishing to minimize changes to the M1078A1's wiring harness I decided to pull the 'G', 'W', and 'X' pins from the M939A2 CTIS ECU connector. Once I had pulled all three (matching the plaza Arduino CTIS, too) the ABS fault code dropped, and our...

Yes. The same issues, See this earlier post hunting for ABS solutions—

Following up on the schematics. It appears the M1078A1 and M939A2 wiring harnesses routed a few items differently at what appears to be the (M1078A1's P110) connector to the CTIS ECU. Since @GeneralDisorder has suggested the Dana Spicer ECU's do not connect across J1939 and we can connect to...

Ours seems to complain with an ABS light when the M939A2 Dana Spicer ECU is plugged in. Unplugging it turns off the ABS light. I believe the M939A2 CTIS ECU is sending something on a conflicting path for the M1078A1—

Well, I (the other burnt resistor member) had an interesting experience today and was just coming in to make an M1078 CTIS schematic to M939A2 CTIS schematic. Since replacing the resistors we have been using our plaza Arduino CTIS controller. Today while replacing the dash air brake hand...

Once he hooks up diagnostics I am rooting for code 32 or 35—

I may not understand the CTIS operation, nor the pnuematic issues well. Though perhaps the issue is between the supply tank and PCU, not between PCU and tires?

My brothers and I still say, "No photos, no story. Didn't happen." We need photographs of your new tinker toy and trip—

Has anyone tried using the hydraulic kneeling cylinders to level the vehicle when parked?

Are we comparing STC (Standard Test Conditions) rating as panels are sold or NMOT (Nominal Module Operating Temperature) rating as they more likely perform real world? The STC rating for these 5 LG panels appears to be 2,200W. The NMOT rating appears the be 1,670W. If he mounts them with air...

I keep forgetting to look at rronmar Youtubes. When I remember they are very enlightening. Thank you–

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You rewired the 12v feed to the PDP to run off 24 to 12 converter? I like that idea, keeping the alternator all on 24v, right? Which converter and where did you locate it?

The front tires have a different 90º angle connection with the slot so that the front tires may be lowered independent of the rear tires for air transport. If you do not need to air transport your vehicle it is considered good practice to replace these kneeling valves with non-kneeling valves...

Does anyone recall when towing is to occur or have we walked too far beyond that?

I assume the LiFePo4 are for a habitat? What is your use case? Is your alternator the only charging source you are planning to use?