Brake Controller Question
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Senior User
Joined: Oct 2015
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Brake Controller Question
Bought a brake controller for my 99 Expedition which has the factory 7pin tow package. All the trailer lights work when I hook it up to the truck but I'm not getting power to the trailer brakes. I towed this same trailer last week with my 14 F-150 without issue. The brake controller displays "--" when hooked up. When I manually depress the brake slide on the controller, the brake lights illuminate on the vehicle but again, no brakes. Is there a fuse for the electric brakes?
New User
Joined: Sep 2007
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Here is the link to owners manuals find your 99 and go to page 135 there is a fuse.
JustGiveMeTheDamnManual.com - Your Source For Free Owners Manuals
JustGiveMeTheDamnManual.com - Your Source For Free Owners Manuals
Former Vendor
Joined: Dec 2016
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You don't mention the brake controller make and model, but the bars you describe are likely telling you that the controller isn't 'reading' a trailer. This means that there's a short somewhere in the brake output circuit. The most likely thing to check (other than the fuse Lossoftraction mentioned) is a dirty/damaged/corroded 7-way connector on the Expy.
If you find white or green corrosion on the pins in the connector, there's a good chance the corrosion has migrated to the inside of the connector, preventing signal from getting through.
If you find white or green corrosion on the pins in the connector, there's a good chance the corrosion has migrated to the inside of the connector, preventing signal from getting through.
FTE Legend
Joined: Jul 2005
Posts: 65,938
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From: Millersville, MD
Here is the link to owners manuals find your 99 and go to page 135 there is a fuse.
JustGiveMeTheDamnManual.com - Your Source For Free Owners Manuals
JustGiveMeTheDamnManual.com - Your Source For Free Owners Manuals
...and more than likely a relay is also required.
Hotshot
Joined: Jan 2010
Posts: 10,060
Likes: 491
From: Bristol, TN.
Just take it a step at a time. first verify you have the fuse and relay you need in place. After that an open circuit is far more likely than a short, post back once you are sure everything is in place and we can walk you through this. 
Steve
Steve
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