if I understand correctly there is no way to make FOSS AA (protocol itself is not open unless reverse engineered). There needs to be separate implementation like AA / CarPlay and headunit needs to support it. Current best case scenario is miracast supporting headunits (but this is one directional)

since this is F-Droid community I didn’t mention it, but I’m looking for FOSS solutions. My phone is degoogled and doesn’t have android auto

Yes it just needed guage in tee and regulator needs flow.

absolutely this, life is all good once I used splitter. I can see pressure guage reading 60-65PSI vs 20-25PSI. Thanks a lot for pointing this out

Going to try tee approach as mentioned in other post otherwise considering it defective.

Ah so I misunderstood how to use guage and in general how regulator works. Thanks for mentioning this. Would it work if I use splitter instead of tee ? (I’ve splitter readily available to test tomorrow)

oh didn’t try it with hose, will test it (mostly tomorrow). I don’t really want permanent pressure guage, just making sure pressure is good before I install tubing.

oh don’t worry about red needle (it’s some kind of inertia guage?), it’s pushed by black needle as soon as water starts and can be freely moved by dial on top

There is arrow on regulator and pressure guage is downstream (arrow pointing towards it) Also added 2 pics to original post.

I think I connected it correctly but please let me know if I misunderstood it.

There is only one way to connect pressure regulator though (hopefully I’m not attaching in reverse order)

this is the channel I watched (specifically this: https://www.youtube.com/watch?v=Z4zoMKT0La8)

Thanks for pointing fmhy, good resource to have.