Tie together inner and outer dual?

[wg4t50]

I am with buswarrior, I have the Pressure Pro setup, the good is it does give you good info and will give an alarm if pressure drops about 15psi.  Tha bad part, they can be a pain in the a$$ to get them to not leak, but like most things there is a learning curve, as long as you get the center part in the center then screw them on, they work fine, but if you just screw em on with out getting the center in the center, you will not like them.  That being said, follow the instructions, they work, have them on the toad too a 94 Ford F150, they work great, but had to install heavy stems in the rim to propr support them.  After about 12K miles no issues.