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Supco SLP90120 low pressure switch. Closes at 120PSI and opens at 90psi. Almost an exact match to stock switching psi. Will need to be spliced in to existing military style connector.

Found an "opens on low" pressure switch at Grainger. Closes at 100psi and opens at 75psi and its max pressure is 600 so no problems there. The range is a little different than stock switch of 120psi close and 85 psi open but I think it's close enough. Grainger part number 4LWX9 and it's $16.

I don't think so. I thinnk the Spicer part you listed is a tire pressure monitor that tells the CTIS what the pressure is where this part is a switch that controls when the CTIS can operate.

I need one of these. Anyone have an extra they're willing to part with?

After pulling the part and doing a little Googling here's the part number: Nsn: 5930 01 287 3965 Does anyone know how this sensor works? I know the CTIS reads it and will open the for business if it sees 120psi and then shut down if the tank pressure drops below 85. Is it the CTIS reading the...

I'll pull it tonight and check.

Not in the TM I found it in but I'll check some others.

I'm pretty sure the Spicer 513403 part is a transducer and not what I'm looking for here. I found it in the TM's but no part number is given. Anyone have the switch part number?

I'm seeing a CTIS upgrade 90PSI sensor. What does that do for you or is it for a different application?

YES! That's exactly what I'm seeing with my CTIS. That's what I wanted to hear. Thanks! Now where do I find one?

Found this yesterday when looking for air leaks on my 1990 M923A2. Hopefully this has something to do with my CTIS not working. I searched the TM's for an hour with no luck and figured maybe someone here can tell me what this sensor is for and where to find a new one. There's another fitting...