seanmayman
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BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. The forums are not affiliated with Mack Trucks, Inc.
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Help, Brake Light Problem
in Air Systems and Brakes
Posted
check your air pressure for the truck. sometimes the brake lights will come on when you have low air pressure