Help with this diagram

[rouge67]

On the 88-91 EEC electrical diagram herein, what mean exactly "→ ignition run circuit" and "to ignition switch". (Center of the diagram)
Top left, #30 what mean NDS ?
Top right, what mean " ↓to ignition run"
Thanking you

[86GTdriver]

On the 88-91 EEC electrical diagram herein, what mean exactly "→ ignition run circuit" and "to ignition switch". (Center of the diagram)
Top left, #30 what mean NDS ?
Top right, what mean " ↓to ignition run"
Thanking you

Neutral Drive Switch (NDS) is the same position you put the key in for Key on Engine Off (KOEO), in other words the ignition key position in the middle of off and engine start.

#30 refers to PIN 30 on the main connector to the EEC4 computer. In this case, PIN 30 goes to Neutral Drive Switch, aka the Neutral Safety Switch. The switch that is engaged when you press the clutch pedal to the floor before you actually start the car.

[mustangxtreme]

ignition run circuit

This would be a wire from the ignition switch that has power with the key in the run position.

to ignition switch

The red/blue wire gets power from the ignition switch in the start position. the red/green gets power from the ignition switch in the run position.

↓to ignition run

This is for a car with an idiot light. The light is connected to an ignition switch power source in the run position. The ECU provides the ground when the vehicle isn't running.

[rouge67]

Thank you Dave and 86GTdriver !
One more question, to what refer the world "ignition switch" ? Is it different of the ignition key ?

[mustangxtreme]

On Fox Chassis cars the ignition switch is located lower on the steering column than the key lock. There is a linkage that connects the lock to the switch and activates the switch. While you are in there, take a good look at the ignition switch. They are known to separate and can cause all kinds of gremlins including burning a car to the ground.

[rouge67]

Thanx Dave !

[mustangxtreme]

You are welcome.