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Old 02-18-2009, 02:13 PM
bczoom bczoom is offline
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Join Date: Oct 2008
Location: W. PA
Posts: 155
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Re: Trailer Brake Controller

I'd test again with the trailer attached. If I recall correctly, the P3 is an interial (sp?) based system. Since the truck is sitting there (and there's no trailer attached), there's nothing for it to do.
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