I was going to hook up an LED to my pump so i know when it turns on. Just to make sure everything is running OK, and it's turning on at the correct boost. But really, just because the pump is turning on, that does not mean that correct pressure and fluid is reaching your injectors. Same reason we put fuel pressure regulators on our fuel system. Obviously you will not be able to use an ordinary fuel pressure gauge because they normally don't go higher than 80psi. Which the various AI pumps are from 150-250 psi. I did a quick Google search and found these:

http://valvesandinstruments.com/cata...1/?aa_range=56

I'm sure there's some at home depot and Lowes that would work also.

So i came up with this simple way to know your pump is working and fluid is actually going where its supposed to.

Now i am running two injectors, but this would work the same for one, or more injectors. I'll post actual pics after it's installed.