Blower motor not working at all, 99 cherokee sport

My blower motor will not work at all, not at any setting on the fan speed switch. I replaced the blower motor resistor, and that didn't do it. When I turn the selector switch to A/C, I can hear the compressor running, but no air is being pushed thru the system.
Is there another large fuse or relay in the engine compartment or behind the glove box that may be bad ?
I also pulled off the panel whcih houses the fan speed selector and I see noting burned up there.
A little help would be appreciated.

did a little swapping of relays and that was the problem. The relay is just above the blower motor resistor, the 5 prong black box type of relay. Works fine now.