Cadillac 2005 XLR Owner's Manual page 347

CAUTION:
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Fans or other moving engine parts can injure
you badly. Keep your hands away from moving
parts once the engine is running.
5. Check that the jumper cables do not have loose or
missing insulation. If they do, you could get a
shock. The vehicles could be damaged too.
Before you connect the cables, here are some
basic things you should know. Positive (+) will go to
positive (+) or to a remote positive (+) terminal if
the vehicle has one. Negative ( ) will go to a heavy,
unpainted metal engine part or to a remote
negative ( ) terminal if the vehicle has one.
Do not connect positive (+) to negative ( ) or you
will get a short that would damage the battery
and maybe other parts too. And do not connect the
negative ( ) cable to the negative ( ) terminal on
the dead battery because this can cause sparks.
6. Connect the red positive (+) cable to the positive (+)
terminal of the dead battery. Use a remote
positive (+) terminal if the vehicle has one.
7. Do not let the other end touch metal. Connect it to
the positive (+) terminal of the good battery. Use a
remote positive (+) terminal if the vehicle has one.
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