where is my A/C Relay?

Where in the world is the A/C relay. I have a 97 XJ 4.0 auto.

after sitting in garage for 2 weeks while putting lift on, I got it out and tested the lift with some MILD wheeling. Had the AC crankin cold, after about 1/2 hour, noticed my temp was almost pegged! I was only a block from the driveway, so I started home, then about 20 foot before drive, bang, the gauge went down to about 225 (still hot). meaning to me that the thermostat popped open.

Let it cool for a few hours, then drove it, been fine since (this was about 2-3 weeks ago) BUT, ever since then the A/C has not worked at all! it always runs around 210.

I am thinking something electrical, maybe the relay? What do you guys think?

thanks,
Jason

i believe the relay is under the hood in the electrical box, and i'm not too sure that sounds like the culprit (not sure what is though), but it's worth a check.