or when you disconnect the battery , disconnect both the positive and negative cables, and touch and hold the two cables together for 30 seconds. this will discharge any juice in teh system quickly instead of waiting a long time for it to discharge.
dont do anything stupid like reconnect them backwards, or touch them together while your touching the battery or anything else that doesnt make sense.
this wil reset the computer right away
97 TJ, 4cyl, auto, bone stock, 86k miles.