1987 camaro fuel pump wiring?

i just put a 355 carberated engine in place of the 2.8mpfi in my 1987 camaro. i now am needing to find where the positive wire comes into the car and runs to the front at? i need to find where its at before it gets to the front of the car to wire it to a switch. i no longer have the computer or wiring for the old 2.8 under the hood. also will i need to use a relay to use the electric fue pump? thanks alot for any help you can be. rich email: snipped-for-privacy@webtv.net