[thor66]

Originally Posted by Walter_Middie

On my car (1975) the "B" light is on for both parking brake and there is a switch on the master cylinder to show a fault in the braking system. You can see the switch on the master cylinder here:

https://www.pelicanparts.com/More_Info/91135501202.htm?pn=911-355-012-02-M253&SVSVSI=5871&DID=3564

yes, on some MYs it is a triple fault light