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10-15-2010, 05:45 PM
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#1 | |
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Conversion Truck Addicted
Join Date: Sep 2009
Location: Denmark, Europe
Posts: 1,551
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Whats the plug for?
Whats this plug with a bracket on for?
its on my Brake proportioning valve Thanks Thomas 
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Thomas Quote:
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10-15-2010, 06:14 PM
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#2 |
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Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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Re: Whats the plug for?
I am pretty sure that is the low pressure switch. It will turn on the red "brake" light on that's in the dash cluster.
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1974 Jimmy- 5.3/4L80e/NP241 |
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10-15-2010, 06:47 PM
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#3 |
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Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: Whats the plug for?
It is a pressure differential switch. As long as there is pressure in both brake circuits the internal pin inside the proportioning valve is centered and floats, a loss of fluid in one of the circuits will move the pin to ground completing the circuit and making your brake light come on as Jon said. It is just a warning that there is a leak in the system
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