Trailer brakes

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Apr 20, 2012 | 06:11 PM

kbf1961

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From: Grays Harbor ,WA

Trailer brakes

I suppose this is the wrong forum but how much voltage should there be at the trailer plug for the trailer brakes. Im getting about 1.9.with the brake pedal depressed truck running. First time Ive ever had to diagnose trailer brakes, but that seems a little low.

Apr 21, 2012 | 01:01 AM

f250rangerexplorer

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From: Yuba City, Ca

Do you have the built in TBC?

With the gain maxed out and brakes activated I'm pretty sure you should have 12v. The less gain you have the less voltage of course.

Apr 21, 2012 | 09:54 AM

kbf1961

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Joined: Jul 2011

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From: Grays Harbor ,WA

Quote:

Originally Posted by f250rangerexplorer

Do you have the built in TBC?

With the gain maxed out and brakes activated I'm pretty sure you should have 12v. The less gain you have the less voltage of course.

Thanks for the reply. I have the ford controller. I got the answers in the super duty forum