I have a 1991 Jeep Wrangler YJ with the inline 6 and me and my dad put a new stereo in and speakers that I got for Christmas and it used to start and run very good before but now it runs weird. After putting the stereo and speakers in I turned it on and tried to back out and it died and then it wouldn't start after that. Then the next day all of the sudden it started and was running good. Anyways it keeps dying or it won't start and I don't know why. Does anyone have any ideas as to what it could be, I'm guessing an electrical problem just don't know what.