You just purchased your first jeep A 98 TJ wrangler While driving it went dead you had a new alternator installed and had the computer check and you can't figure out what is wrong No electrical Please?

try checking out the battery cables. If they are bad they can cause horrific electrical problems. Next check the grounds in the engine compartment. Next check the relays for the ignition on in the power distribution block box in the engine compartment. Somewhere to start.