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this post was submitted on 26 Nov 2025
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Asklemmy
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Proper sequence of attaching jumper cables.
Negative negative
Positive positive right?
Sometimes a chassis connection?
The important thing is not to complete the circuit near a battery, since it can cause sparks which can ignite the flammable vapors that batteries tend to emit when discharging. This is especially important near the dead battery, which has potentially been discharging quite a lot recently.
So the usual sequence is:
I usually start by clipping the dead negative cable to something non-conductive to keep it out of the way and then move it to ground as the last step.
Like a hose? What is non conductive?
I wouldn't clip onto a hose, but maybe some plastic flashing or a plastic bracket. Most cars have something near the battery that would work. It's not essential; just can make it a little easier.