How do you install an msd in a rx7?

To install an MSD ignition system in a Mazda RX-7, start by disconnecting the battery and removing the old ignition components. Mount the MSD ignition box in a secure location, ensuring it's well-ventilated. Connect the wiring according to the MSD installation diagram, linking the ignition coil, power source, and trigger wires. Finally, double-check all connections, reassemble any removed parts, and reconnect the battery before testing the system.