Edit: not a backup on jeeps. they use a capacitor and are discharged about 10min after you disconnect your battery. The airbag module should be under the driver seat. I might be thinking about cherokee's though. I'm new to having air bags myself.
And don't worry about the mis post. the mods are good at moving things.
Jeep: Pioneered by a war, popularized by AMC, revived by Chrysler, jacked by some Germans, and copied by all.