1976 R Model Mack Sensor in Don Wilson jr's Blog A blog by Don Wilson jr in General Posted January 11, 2014 They are for ABS I have a 1977 we removed the wires completly the brake relay valve between the tamdems was also replaced with a standard universal one with no ABS wires on it.
1976 R Model Mack Sensor
in Don Wilson jr's Blog
A blog by Don Wilson jr in General
Posted
They are for ABS I have a 1977 we removed the wires completly the brake relay valve between the tamdems was also replaced with a standard universal one with no ABS wires on it.