Watch this video on the crossfire dual tire inflation system.
I did not use the mounting brackets - i just drilled the center cap and bolted
The pressure unit to the hub. I asked for 90 degree end fittings also on both hoses.
Wotking great so far. I can see tire pressure for both tires with a glance, and fill both tires from the stem on the crossfire unit.
Watch this installation video:
https://youtu.be/B9jQAw56IuU