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Old 05-23-2017, 06:59 PM   #1
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Brake light sensor

I have a 2002 Travel Supreme Class A motor home, does anyone know where the sensor, low pressure switch for the Air Brakes is located??
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Old 05-23-2017, 07:36 PM   #2
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Do you know what chassis you have?
2000 Allegro Bus 35R 3126 Cat 300 Allison 3060MD 6 speed
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Old 05-23-2017, 11:46 PM   #3
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Originally Posted by KKLLN View Post
I have a 2002 Travel Supreme Class A motor home, does anyone know where the sensor, low pressure switch for the Air Brakes is located??
By your title, I thought you wanted to know where the BRAKE LIGHT SWITCH is in the system. What you want is the LOW AIR WARNING pressure switch. And yes, it would be nice to know the year/make/model/chassis/engine etc. so that someone who maybe has the same coach or model, and has dealt with the low air pressure sensor, might be able to help.
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '18 Honda Africa Twin Adventure Sports DCT
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Old 05-24-2017, 06:39 AM   #4
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Freightliner xc chassis IS above and in front of rear axle on frame rail. Driver side
02 Allegro Bus
ISC 350 Cummins
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Old 05-24-2017, 07:50 AM   #5
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2002 Travel Supreme

we have a Spartan Chassis, brake light stays on, brakes are fine and have air, fiqure its the sensor went bad, but cant find it to check it and replace it
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Old 05-24-2017, 09:20 AM   #6
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Are the air guages reading correctly or are they jumping up and down. The freightliner chassis from 99 -01 were famous for bad soldering in the VUC unit, which is where the air sensors are, as well as things like engine temp ect. Mine had a similar issue, which we corrected by resoldering the wires in the VUC. There is a thread on repairing it on this forum. I thought it was only for freightliner chassis, but maybe some of the same boxes got put on the spartan chassis. Either way it is likely the sensors reading incorrectly setting off the low air alarm.
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brake, light

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