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Trailer Brakes

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Tweeter

02-17-2006 11:54:05

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I bought a Hoppy BreakForce controller for my dual axle trailer. The controller can handle up to 3 axles with brakes. I know I have it wired correctly to my truck but when I apply the brakes the tires skid. I decreased the adjustment wheel on the controller all the way down and it still happens. Is there an adjustment on electric brakes that I must do first?

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john_bud

02-17-2006 20:31:28

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Re: Trailer Brakes in reply to Tweeter, 02-17-2006 11:54:05

Tweeter,

My trailer does this almost everytime I use it --if it has been sitting. The drums get a light rust on them and the brakes grab.

Get your controllers instructions and adjust to match your trailer load. Also make sure the controller is installed level when the truck is level. As you stop the inertia causes the trailer brakes to come on harder. If the controller is nose down, it will think there is a need for a lot of brake action and lock up.

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tn terry t

02-17-2006 19:47:11

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Re: Trailer Brakes in reply to Tweeter, 02-17-2006 11:54:05

hey tweeter try this ; unplug the controler and try the brakes if it still locks up guess what

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Tweeter

02-18-2006 06:42:12

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Re: Trailer Brakes in reply to tn terry t, 02-17-2006 19:47:11

I did try that and yes they do still lock up. What does that mean?

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Stickler

02-18-2006 09:18:36

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Re: Trailer Brakes in reply to Tweeter, 02-18-2006 06:42:12

then it sounds like your trailer brakes are being fed from your truck's brake light circuit. Should be no brake feed at all with the controller unplugged.

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Richard H.

02-17-2006 13:43:49

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Re: Trailer Brakes in reply to Tweeter, 02-17-2006 11:54:05

RV sites are a good place to look for different pin configs on different trucks(Marks RVs). You may want to make sure the truck to trailer ground is good.

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Todd Roberts

02-17-2006 19:22:51

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Re: Trailer Brakes in reply to Richard H., 02-17-2006 13:43:49

Lets first start with your brake controller. I"m not to familar with your breakforce, but the Drawtite # 5100 , like most others brands , has two different adjustment features . On the side of the controller , there should be an adjustment lever for syncronization, meaning , when you apply your brakes ,you have the ability to adjust your trailer to stop in sync. with your truck. If it is not adjusted correctly, you will have a delayed reaction . This lever will have nothing to do with the amount of force your brakes are applied . I suspect your problem may be whith the other adjustment lever on the top of the controller . This is not the large thumb lever on the top front of the box. this lever is small and is a Gain lever. It will either increase or decrease the amount of break preasure applied to your breakes on your trailer.

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Mike M

02-17-2006 12:25:18

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Re: Trailer Brakes in reply to Tweeter, 02-17-2006 11:54:05

Are you on gravel,dirt,or pavement ? Empty or light loaded ?

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Tweeter

02-17-2006 12:45:48

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Re: Trailer Brakes in reply to Mike M, 02-17-2006 12:25:18

I am pulling it on pavement with an empty load.

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Mike M

02-17-2006 17:52:56

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Re: Trailer Brakes in reply to Tweeter, 02-17-2006 12:45:48

Since your not on gravel It does sound like you have a problem somewhere. I'd do like the others said and check out with a test light.

Does your brand of controller have a pendulem that may also need adjusted ?

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RustyFarmall

02-17-2006 12:16:03

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Re: Trailer Brakes in reply to Tweeter, 02-17-2006 11:54:05

Just a thought, I had the same thing happen once, and discovered that the trailer plug was not wired to be compatible with the wiring on my truck. The wire that fed the BRAKES on the trailer was actually connected to the brake LIGHTS on the truck. It didn't work too well that way. Does this make sense?

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Tweeter

02-17-2006 12:52:55

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Re: Trailer Brakes in reply to RustyFarmall, 02-17-2006 12:16:03

So all you did was rearrange the wires inside the 7 pin connector on the trailer side?

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RustyFarmall

02-17-2006 13:24:56

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Re: Trailer Brakes in reply to Tweeter, 02-17-2006 12:52:55

Yes, that"s all I did. This particular trailer worked good behind the "98 Chevy I had, but gave problems when hooked to the "01 Chevy that I traded for. Both Chevys, go figure.

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Tweeter

02-17-2006 13:40:38

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Re: Trailer Brakes in reply to RustyFarmall, 02-17-2006 13:24:56

I justed checked the wiring and the trailer wires matched the truck's connection diagram that I have. On the 7-pin connector, what is the middle pin for? No wires were attached to that.

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RustyFarmall

02-17-2006 13:55:12

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Re: Trailer Brakes in reply to Tweeter, 02-17-2006 13:40:38

I believe the middle pin is used for a heavy wire to keep a battery charged up on the trailer. Would most often be used only on an RV type of travel trailer.

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Stickler

02-17-2006 14:24:54

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Re: Trailer Brakes in reply to RustyFarmall, 02-17-2006 13:55:12

Link

center pin is usually backup lights.

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Flatulant

02-17-2006 14:17:29

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Re: Trailer Brakes in reply to RustyFarmall, 02-17-2006 13:55:12

Use yor test light and make sure one of the pins on the truck side connector gets bright, and dims as the controller is actuated.

Now make sure that the corresponding pin on the trailer end, when 12volts is applied, (and ground) makes a clicking, or clanking sound at the wheels. As the magnet grabs the drum.

If all is correct it should work. I suspect you have the brakes picking up electricity headed to a brake lamp.

Try the blinkers one at a time as you travel down the road. If it's getting power from a brakelight you'll know right away.

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