The neutral safety switch is an important component in your 1966 Mustang that ensures that the car can only be started in the ‘Park’ or ‘Neutral’ position. This switch is responsible for ensuring that the clutch pedal is depressed or the shifter is in the ‘P’ or ‘N’ position before the starter motor is engaged. In this article, we’ll discuss the 1966 Mustang neutral safety switch wiring diagram in detail.
What is a Neutral Safety Switch?
A neutral safety switch is an electrical component that is installed in an automobile with an automatic transmission. The switch is typically mounted on the side of the transmission and connects to the ignition switch. The switch is designed to prevent the engine from being started unless the transmission is in ‘Park’ or ‘Neutral’. This safety feature is important because it prevents the car from accidentally launching in gear, which can cause a serious accident.
The neutral safety switch is also connected to the reverse light circuit so that when the car is in ‘Reverse’, the reverse lights will come on. This is another safety feature that warns other drivers that the car is backing up.
Wiring Diagram for the 1966 Mustang Neutral Safety Switch
The neutral safety switch wiring diagram for the 1966 Mustang is relatively simple. There are only four wires that need to be connected to the switch, and they are as follows:
| Wire | Color | Function |
|---|---|---|
| 1 | Red with blue stripe | Connects to the ignition switch |
| 2 | Green | Connects to the backup light switch |
| 3 | Red with green stripe | Connects to the starter solenoid |
| 4 | Black with pink stripe | Connects to ground |
The wiring diagram for the 1966 Mustang neutral safety switch is shown below:
Wire 1 – Red with Blue Stripe
Wire 1 connects to the ignition switch and should be connected to the ‘S’ wire on the ignition switch. When the key is turned to the ‘Start’ position, this wire will send power to the starter solenoid, which will engage the starter motor.
Wire 2 – Green
Wire 2 connects to the backup light switch and should be connected to the terminal that is activated when the transmission is in ‘Reverse’. When the transmission is in ‘Reverse’, this wire will send power to the backup lights, which will turn them on.
Wire 3 – Red with Green Stripe
Wire 3 connects to the starter solenoid and should be connected to the ‘I’ terminal on the solenoid. When the key is turned to the ‘Start’ position, this wire will receive power from the ignition switch and engage the starter motor.
Wire 4 – Black with Pink Stripe
Wire 4 connects to ground and should be connected to a point on the chassis or engine block. This wire completes the circuit and ensures that the switch works properly.
FAQ About the 1966 Mustang Neutral Safety Switch Wiring Diagram
What happens if the neutral safety switch fails?
If the neutral safety switch fails, the car may not start or may start in any gear, which can be dangerous. Additionally, the backup lights may not work, which can be a safety hazard when backing up.
How do I test the neutral safety switch?
You can test the neutral safety switch by using a multimeter to check for continuity between the switch terminals. If there is no continuity when the switch is in the ‘Park’ or ‘Neutral’ position, the switch is faulty and needs to be replaced.
How do I replace the neutral safety switch?
To replace the neutral safety switch, you will need to locate the switch on the side of the transmission and disconnect the wires. Once the wires are disconnected, you can remove the switch from the transmission and replace it with a new one. Reconnect the wires and test the switch to make sure it is working properly.
Can I bypass the neutral safety switch?
Bypassing the neutral safety switch is not recommended as it can be dangerous. The switch is designed to prevent the car from starting in gear, which can cause a serious accident. It is important to replace the switch if it is faulty rather than bypassing it.
Conclusion
The 1966 Mustang neutral safety switch wiring diagram is essential for ensuring that your car starts safely and runs properly. By understanding how the switch works and how to wire it correctly, you can ensure that your car is safe and reliable. If you need further assistance with your neutral safety switch or any other component of your Mustang, consult a qualified mechanic or seek advice from a Mustang enthusiast community.
