Air Brake Manual


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Stop light switch

The stop light switch (Fig. 22) is an air-signaled electrical switch which is turned on any time a brake application is made. The switch is usually connected to a double check valve and can be plumbed anywhere in the application side of the circuit. In a tractor system it is usually plumbed into the double check valve that is matched with the tractor protection valve.

Stop light switch
Figure 22. Stop light switch

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Rev: 2018