1993 jeep grand cherokee 4wd 6cyl.

Got a relay in the power distribution center? (black box just behind the battery, towards the firewall) I can't remember if you have one (funny because I've got two outside but too cold to go look) Anyhow, everything in there is labled on cover inside.
Other stuff to look at: check for cable connections at starter & block for clean & secure. check neutral safety switch, check ign switch. Make sure battery connections are clean on inside, not just on outside!