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Ha, now that's a laugh! Even the locations in the cluster aren't standard! Your layout is totally different than mine. I'm sure the grunts that put them back together just stick 'em in any spot as long as the hoses or wires can reach.

I agree for the reasons mentioned, also I have no interest in de-plumbing all those hard lines just to replace them with electric senders. Nothing's leaking, so no need to mess with any of it. It's good to know that I can source new, direct-read gauges.

Ah... after bouncing to a few vendor sites, that appears to be the case. At some point, the military began installing senders and electrical gauges. I guess my truck is just older. Big Mike's says you can buy this pressure gauge and use it for pretty much any fluid system where readings are...

Interesting! I just checked my truck yesterday and the air and oil pressure are both mechanical with a hard line for the oil gauge and a rubber line attached to a hard line for the air gauge. The gauges are totally identical. Identical part numbers, no "oil can" symbol on the face. The only...

The truck only had one previous non-military owner, and they did nothing with the truck. I'm probably mistaken about the oil pressure gauge. I'll feel around under the dash and find out. I did feel the hard air line for the air gauge under there.

Ok, cool. I wasn't sure if senders varied across vehicles (HMMWV, M35, etc) Also, I believe the pressure gauges on the 809's are capillary action with a hard line, not electrical senders. The temp gauge will be an electrical sender. I'll check with CARNAC to see what the backs of the gauges...

As the topic states- Are they common application or are they vehicle specific? CARNAC has a couple for sale that I thought I would snap up for my spare parts pile. He was unsure if they were compatible with the 809 series. Please take a look and let me know what you think.