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Ah ha! Thank you so much! we'll plan for that, then. Awesome. Sad to hear about the park, that's unfortunate. But at least we're still doing something together as a group.

So, I know this is pretty much a last minute request, I kinda lost track of time and didn't realize how close the 4th is. We started sheep farming (an M923 makes an excellent sheep hauler, who knew?), and have been really distracted with that. Anyway, I don't have facebook/social media... Can...

I don't have facebook or other social media so I haven't seen that. Thanks for the heads-up.

Anybody have any info on the Centralia Summerfest for 2022? Normally there's a post about it in here from Peter (Amer-Team), but I searched and searched and am not finding anything. Maybe my search-fu is weak, and I just missed it. Anyone have any information?

Unfortunately, despite how relatively close we are, I am unavailable for at least the next four weeks, possibly longer, due to previous commitments. Is anyone else able to lend a hand?

Thank you for the heads-up on this. I've dropped some in the hat, I'll add more as/when I can. Every little bit helps. We take care of our own.

I just wanted to update that this thread hasn't been forgotten or ignored. I haven't had a chance to do much on the M923 yet. Some things in real life came up, interfering with my ability to get out there and work on the truck. I did get the lower connector chiseled open, so that's a start. And...

Duly noted, thank you. That goes into my maintenance list for this weekend. Along with checking the neutral safety switch itself.

This is the correct connector, yes? I had a few minutes before work this morning, so I went out and checked the screw connector. It's put together pretty tight. So tight, I couldn't get it loose with a pair of channel locks. I don't think it's coming off there anytime soon.

Power Probe IV ordered and on its way. Thank you for the heads-up.

I will endeavour to check the screw connector tomorrow after work. How did you determine that it is a brushless alternator? I could not find any information from my original order or on the website which indicates which kind it is and I haven't seen any markings on the alternator itself...

I do not believe it is a brushless alternator. If I remember correctly, it's a 24vdc 12SI ACDelco unit. And this is the wire that was left unconnected when I put the new alternator in. As I recall, the instructions that came with the new alternator said to leave that wire disconnected...

This is the label on the PCB that is in the truck now: Again, it is the PCB that came in the truck. I can only assume the Oregon National Guard put that in there before the truck was excessed. The NSN and ORD numbers match what is shown in this thread...

Thank you for that advice, I actually anticipated that and I'm one step ahead for that one. Already ordered the solenoids, they arrived last Saturday. I got the big three-terminal ground-through-bracket units, Cole Hersee 24124 SPST 24vdc 85amp continuous duty, same model as the top one that's...

One further question... My understanding is that in addition to the neutral safety switch, there is at least one safety switch to prevent engaging the starter on the engine if it is already running (alternator voltage and/or engine oil pressure). Is that not correct? My initial assumption was...

Also, here is a better view of the circuit board inside the PCB.

First off, thank you simp5782 for responding. I'm glad to have the knowledge of someone who knows far more than I do, to look at this thing. As I am sure you have already figured out, I have no idea what I'm doing with this PCB. I am being as forthcoming as I can with whatever information I have...

Update: The situation has been temporarily resolved to at least keep the truck operational. It's not ideal, but at least it works. The solenoids in the PCB are not at fault. I have no idea if the components on the circuit board are faulty, I don't have enough information on how they work or...

These are the threads I have predominantly been reading to bone up on this problem: https://www.steelsoldiers.com/threads/m939-series-protective-control-box-work-around.179359/ https://www.steelsoldiers.com/threads/trouble-shooting-the-protective-control-box-in-a-5-ton.11557/...

Looking for troubleshooting guidance and suggestions on resolving this intermittent no-start condition. The issue only started on July 3rd, when we were prepping the truck to participate in some Independence Day operations. The truck is a 1986 AM General M923 with the ABS system. It has the...