I was driving my jeep last night and stopped at a red light. I noticed that my voltmeter was reading almost as low as 9-10 volts!! My lights were also very dim. I heard a "click" and my voltmeter shot up to 13-14 volts. That "click" was my rear defroster shutting off. Would bigger battery cables help in this situation or is there something else that I could do to prevent this? I'm planning on installing bigger cables in the spring and probably a bigger alternator from a zj V8. Thanks for the help!!!