Pete had posted a link to this ARRC site in the Jeep Talk forum, that is pretty good and has wiring diagrams and everything on it, I wasn't sure how to post a link to his post so here is a link to the site.

http://arrc.epnet.com/autoasp/index.asp?sid=3041639&uid=s9072919.main.autorefctr

Cut and paste that into IE, I looked it has wiring diagrams, and may help ya out.

I was thinking though, if this relay is tripping and cutting the fuel pump off, have you tried jumping the relay to see if it starts, or removing the relay? I would imagine once you can trace out what connects to the relay on the wiring diagram though, it would help too.

Hope this helps.

Sean