Conversation Between corax and Cochip

Hey there Corax. I've been cruising through the site here for a month or so looking for help with my 7mge swap. I'm now working on tracking down some wiring issues. The two problems I'm having right now is the fuel pump won't keep fuel pressure after start-up and the temp gauge won't read. I tested the fuel pump at the cold start injector and would get no pressure with the key in the "on" position, but when I turned over the engine I got 40psi and the engine would start. I would then watch the pressure drop steadily until it hits zero and the engine would die. Once I figured out how to wire up the Fp port on the diagnostic plug I was able to jump Fp and B+ to get the pump working. I'm now able to start the truck and get the appropriate fuel pressure with key on and she'll stay running, but I can't keep Fp and B+ jumped all the time. Can you help me figure out how to wire these two things the right way?