V1 Ignition Voltage, Battery Positive Voltage, Accessory Voltage...

[JeffsGoblin]

What is the difference between the following: Ignition Voltage, Battery Positive Voltage and Accessory Voltage... as shown in the pin out view of one of the BCM plugs:

I want to get rid of some of the connections, but I want to keep some for future use. Thanks in advance!

 

[Ark :D]

Battery positive voltage = +12v as long as there's a battery connected to your vehicle
Accessory voltage = +12v only when your key is in the Accessory or Run positions
Ignition voltage = +12v only when your key is in the Run position (or perhaps, only if the engine is running, not 100% sure)