I've got everthing wired and installed, but am still seeing the set up prompt. Going through the trouble shooting guide, I see that the pressure sensor sender is expecting to get it's ground through the threads to the fuel rail. I'm pretty sure our truck do not have ground on the fuel rails (as the manifold is plastic, the rails are plastic, etc.

What did you guys do to get a ground on the sender (I tapped the schrader valve nipple, btw).