Cadillac 2004 XLR Owner's Manual page 266

5-42
7. Don't 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.
Don't let the other end touch anything until the next
step. The other end of the negative ( ) cable
doesn't go to the dead battery. It goes to a heavy,
unpainted metal engine part or to a remote
negative ( ) terminal on the vehicle with the dead
battery.
8. Now connect the black
negative ( ) cable to
the negative ( )
terminal of the good
battery. Use a remote
negative ( ) terminal
if the vehicle has one.