Oldsmobile 1995 88 Owner's Manual page 200

5. Check that the jumper cables don't 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 (+) and
negative (-) will go to negative (-) or a metal engine
part. Don't connect
(+)
to
(-)
or you'll get a short
that would damage the battery and maybe other
parts, too.