Military M Series Brake Light Switch
Fits: M Series 2.5 Ton, M151 MUTT, M37
Part #: 7064588, MS75063, MS75063-1, 5972752
*M35A2, switch is located underneath the truck, threaded into the forward (front) end of the Air-Pack.
*M151, pressure switch threads directly into the front face of the brake master cylinder.
*Late Production M37, switch screws directly into a threaded port at the top rear of the brake master cylinder casting.*
*M35A3, switch is located underneath the truck, threaded directly into the passenger side of the Allison automatic transmission casing. It reads internal fluid pressure inside the automatic transmission to turn on the backup lights when you shift into reverse *