Old trailer brake controller

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Flightman91
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Old trailer brake controller

Post by Flightman91 »

I'm looking for an old trailer brake controller that ties into the brake lines on my truck. I know I had one but I think I tossed it workout realizing how awesome these old gems are.
1967(ish) Ford F250 4X4. 390, NP435, Dana 24, Dana 44 front end closed knuckle 4.11 Drum brake, Dana 60 rear end 3.73 Drum brake
2005 Subaru Forrester XS manual
2009 Scion XB Auto
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bluef250
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Re: Old trailer brake controller

Post by bluef250 »

I have one including the resistor.

Why do you want to return to yesteryear? The new units are much better.
Flightman91
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Re: Old trailer brake controller

Post by Flightman91 »

I actually found the one I thought I tossed this afternoon in the back of my garage.

What is the resistor your talking about, mine doesn't appear to have one.

I had heard these things were great. Also I'm on a budget. Please let me know if I've been mislead in thinking these work well.
1967(ish) Ford F250 4X4. 390, NP435, Dana 24, Dana 44 front end closed knuckle 4.11 Drum brake, Dana 60 rear end 3.73 Drum brake
2005 Subaru Forrester XS manual
2009 Scion XB Auto
User avatar
bluef250
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Posts: 924
Joined: Fri Oct 29, 2004 8:49 pm
Location: Arizona

Re: Old trailer brake controller

Post by bluef250 »

It is a variable resister. From http://www.apachepopups.net/smf/index.p ... 91.10;wap2 "When the brake was pushed, the controller activated electric
power to the trailer brakes. The greater the current, or battery output, the greater your braking capacity. On a lightly loaded trailer, this would apply full braking power, and would cause the wheels to grab, or skid. The job of the resistor, was to restrict
the flow of current-- apart from the action of the controller--to the brake magnet and thereby regulate braking power." Otherwise you can "set up" trailer braking capacity for the load you are carrying.
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