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WHY would anyone allow a large current spark at the neg battery cable when disconnecting said cable? A large current spark (from having headlight switch turned on) could cause burns physically AND melt the lead post or cable some. Even if the causing of burns part is flamed by members, what benefit is gained by dumping all that current through the lamp system (remember ALL the lights are lit)? Every vehicle I have owned with an airbag system says just remove the neg cable and wait 15 minutes. I am pretty sure that is sufficient to protect any other system in the car, I have seen many suggest turning on the headlight switch after removing the neg cable (takes time to move from battery to dash switch) . OK techs/experts, this is a serious question, support by facts in a reply please?


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