Mazda 2012 MX-5 Owner's Manual page 331

In Case of an Emergency
Emergency Starting
1. Remove the rubber hose from the
battery cover.
2. Remove the battery cover from its right
side.
3. Make sure the booster battery is 12 V
and that its negative terminal is
grounded.
4. If the booster battery is in another
vehicle, don't allow both vehicles to
touch. Turn off the engine of the
vehicle with the booster battery and all
unnecessary electrical loads in both
vehicles.
7-24
5. Connect the jumper cables in the exact
sequence as in the illustration.
Connect one end of a cable to the
l
positive terminal on the discharged
battery (1).
Attach the other end to the positive
l
terminal on the booster battery (2).
Connect one end of the other cable
l
to the negative terminal of the
booster battery (3).
Connect the other end to the ground
l
point indicated in the illustration
away from the discharged battery
(4).
6. Start the engine of the booster vehicle
and run it a few minutes. Then start the
engine of the other vehicle.
7. When finished, carefully disconnect the
cables in the reverse order described in
the illustration.
8. If the battery cover has been removed,
install it in the reverse order of
removal.