Shift Points
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Shift Points
Does the 2004 F150 transmission change its shift points when a brake controller module is installed under the dash on the passenger side? How about if an acutal brake controller is attached to the wiring under the dash on the driver's side?
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Brake Controller
The reason I asked was because when I bought the truck, the dealer delivered it with a brake chingus that plugs in on the fusebox on the side wall under the dash on the passenger side, but this device is not a brake controller. It is, however, required, if you want to install a brake controller to the wires under the dash on the driver's side. It also came with a device that plugs into a mating plug under the dash on the driver's side. This device has wires labeled for a brake controller.
If the fusebox module makes no difference when no brake controller is installed, why wasn't this just installed at the factory instead of being delivered in an envelope for end-user installation?
If the fusebox module makes no difference when no brake controller is installed, why wasn't this just installed at the factory instead of being delivered in an envelope for end-user installation?
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Joined: Apr 2010
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I can't really answer your question on that. I had nothing that I had to plug into the fuse box. The brake controller had the option to buy a pre-wired wiring harness that would connect the controller to the pre-wired plug, so that is what I did. That way there was no wiring or anything on my part, just mount the controller, plug in the adapter to the controller and plug in the adapter to the plug on the truck under the driver's dash. Then poke the wires out of sight. Couldn't have been simpler. Mine has a factory tow package though, maybe if your truck didnt have a factory tow then something has to be plugged into the fuse box. Other's might know better, but I sure don't.
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Joined: Dec 2010
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From: plymouth mi
my 06 came with a harness to wire to a brake controller and also a relay to plug in behind right side kick panel for trailer towing, I believe that the relay is for charging trailer battery.
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It has been a while, but the more I think about it, I believe mine also had a relay. Sorry I had forgotten that (5 yrs ago).
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Still a Question
I guess I'm still kinda puzzled about why the relay on the right side wasn't installed by the factory or the dealer. The only reason I could think of was that it changed the shift points, which you wouldn't want if you were not towing. Anyone got any other ideas>?
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silentrunning
1987 - 1996 F150 & Larger F-Series Trucks
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Sep 1, 2011 04:50 AM
