Mack 1MR2472M2 - Pressure Brake Light Air Conditioner Switch

Features & Benefits

• Sends a pressure-based signal for brake light activation or air conditioner function
• Used in select Mack trucks where cabin systems share pneumatic input
• Helps resolve inactive lights or intermittent air control tied to faulty pressure logic
• Restores the original trigger timing between brake and HVAC operations

Mack Pressure Brake Light Air Conditioner Switch

When dealing with pressure signal problems inside older brake and HVAC systems, few components are more overlooked than switches. The Mack Pressure Brake Light Air Conditioner Switch bridges two functions that often share close proximity—cabin cooling and brake signaling. This part provides the necessary pressure-based actuation to trigger brake light illumination or compressor cycling, depending on the application. Located in systems where air-based pressure controls multiple signals, the Mack 1MR2472M2 works with specific Mack platforms that use air signal control logic.

MACK 1MR2472M2 Cross Reference

We have 2 alternatives for the 1MR2472M2 by MACK:

• 030999977786
• PAI LSW-0967