Mazda RX-8 Workshop Manual page 2873

when the module is operated (deployed). When installing the air bag module to the tire
wheel, make sure the padded surface is facing up.
4. Stack three tires without wheels on top of the tire with the driver-side air bag module, and then stack
another tire with a wheel on the very top.
5. Secure the tires with wire.
6. Connect the SSTs (Deployment tool) to the SSTs (Adapter harness).
7. Connect both SSTs (Deployment tool) to the battery. Connect the power supply red clip to the positive
battery terminal, and the black clip to the negative battery terminal.
8. Verify that the red lamp on both SSTs (Deployment tool) is illuminated.