This kit is for the earlier styles of brake pressure switches that are screwed into the sides of the accumulator control valves. The second picture shows the types of earlier switches this kit applies to. This kit includes both insulators, the brass connector terminal, an EPDM membrane and the phenolic resin plunger. It also includes a set of sealing washers to seal against the valve body. This 3-piece washer set has two aluminum washers and one steel washer. These are arranged aluminum/steel/aluminum when in place.

The last series of pictures shows the process for dismantling the earliest switches which had flag terminals. These flags are riveted in place and the rivet must be ground off and the rivet and flag discarded. The bullet terminal replaces the flag terminal and a female bullet connector is included to splice into the existing harness.