The best photos from catalogues do you hook up red or black first and what does do you want to hook up mean
You almost always get a spark when connecting this negative cable.
When jump starting it is assumed you will not connect the negative cable to the negative battery cable at all but will instead connect it to a substantial piece of metal of the car, say a bolt on the engine.
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Again not recommended unless you are living in the 50's
Description: If you attach the negative sides first, then one positive clip, the other positive clip is now at 12V with respect to the "ground" of the other car's body.