Air Governor location?

2006 KW T2000 w/c-16. have looked all over, can’t find the air Governor. Got truck started in the fence row, ran good, aired up fine, shut down for lunch, then came back restart just fine, but now won’t build air, zero psi. Want to tap the Governor but can’t find it.

 

Thanks guys, yep finally found it. Back under the sleeper, inside the frame rail. May tap into an air tank, with a hose, and get the truck into the shop. Don’t feel like changing it out laying in the weeds.

 

Well, changed out the Governor, still 0psi. Swapped out compressor with a truck OOS with a messed up undercarriage. And now it’s pumping air. But have a question on something I didn’t notice the first time. This truck fills air in the secondary tank first, then fills primary tank . Never noticed a truck where the primary fills after the secondary. It’s either primary first, or both together.