Well, the diagrams helped thanks. Turns out when I opened the air flow meter the truck started then died out after a few seconds. So being that I checked the efi relay under the hood and it was good, I took the glove box out and looked at the circuit opening relay bolted to the side of the truck at the kick panel area. Since it was in the cavity of the body it was subjected to rain water leaking through a rusty hole in the window frame on the side of the windshield. So, since it was wet I went to Napa and bought a relay and put it in and truck is running fine now. Fuel pump operates normally. Mission accomplished. Thanks for your guys help!
Saturday, October 29th, 2016 AT 1:43 PM