Where can I find an ignition switch wiring diagram for a Mazda RX-7 FD?

To find the official ignition switch wiring diagram for your FD RX-7, you should consult the Factory Service Manual (FSM). When looking up the schematic, make sure to reference the specific manual for your model year, as there are known differences in wiring colors and pinouts between the 1993 and 1994/1995 vehicles ⁶.

Based on the available technical data, here are the best ways to access the diagrams and identify your wiring:

• Downloadable Schematics: A complete FD wiring diagram package is available for download as a ZIP file ⁷.
• 1994 Manual Transmission Guide: If your FD is a 1994 with a manual transmission, there is a dedicated wiring guide detailing the specific function of each wire ⁶.
• Testing and Verification: The terminals on the key switch are generally labeled. However, even with a wiring diagram in hand, it is best practice to use a multimeter to verify your connections. You can probe the switch to find an ignition signal that is active when the key is in the "ON" position and remains active while the engine is cranking ¹.