How can I test the current to the fuel pump

[emuskovitz]

I own a 1987 300zx non-turbo and at the moment it doesn't run. I am strongly suspicious that it's the fuel pump is losing power after the car starts, but can't figure out where to test the current. My question is what's the easiest way for me to test the voltage going to the fuel pump, and where can I find the electrical relays for it.

[evildky]

The best thing to do it to put an inline fuel pressure gauge in the feed line, then you can verify your idle pressure is correct and if you get an extra long piece fo fuel hose you can loop it so the pressure gauge rusts under the windshield wiper and you can see it while you drive.