Four Wire Ignition Switch Diagram: Pinout Guide (2026)
A standard four wire ignition switch diagram connects battery positive (12V hot wire, usually red) to terminal B, ignition switch output (accessory/run, blue/white) to terminal IGN, starter solenoid (yellow/red) to ST, and ground wire (black) or accessory power to ACC. Always verify pin assignment with a multimeter before final connection. 📌 Key Takeaways Terminal B…
