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Author Topic: Prodigy break controler and pulling a car trailer  (Read 1659 times)

173dave

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Prodigy break controler and pulling a car trailer
« on: June 19, 2012, 10:50:47 PM »
I have a 38 ft diesel pusher that has air breaks and a jake break. When pluuing the car trailer every time the jake brake kicks in, the trailer breaks come on very hard causing the tires to smoke..

My question is; using a brake controller and having the jake break on does not seem to be working very well. Is there anyone out there that has experience and/or suggestions for me?
« Last Edit: June 20, 2012, 12:31:15 AM by 173dave »
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skyking1

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Re: Prodigy break controler and pulling a car trailer
« Reply #1 on: June 19, 2012, 11:03:23 PM »
your jake or compression brake must automatically trigger the brake lights; that is what is applying the trailer brakes. There must be a way using a diode or something, to fix that problem.
EDIT: I have a solution. Mount and wire up a second switch on the brake pedal. Wire the prodigy to that. Now the trailer brakes will come on when you want them to.
« Last Edit: June 19, 2012, 11:04:56 PM by skyking1 »
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lavarock1210

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Re: Prodigy break controler and pulling a car trailer
« Reply #2 on: June 20, 2012, 01:16:36 AM »
You also have the Prodigy setting too high if the brakes are locking up on the car trailer. 

Great Horned Owl

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Re: Prodigy break controler and pulling a car trailer
« Reply #3 on: June 20, 2012, 05:29:45 AM »
your jake or compression brake must automatically trigger the brake lights; that is what is applying the trailer brakes. There must be a way using a diode or something, to fix that problem.
EDIT: I have a solution. Mount and wire up a second switch on the brake pedal. Wire the prodigy to that. Now the trailer brakes will come on when you want them to.

The prodigy is an inertial controller. It is triggered when it senses the tow vehicle slowing. It is not triggered by the brake lights going on. You just need to turn down the gain.

Joel
Joel & Dorothy
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Gary RV_Wizard

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Re: Prodigy break controler and pulling a car trailer
« Reply #4 on: June 20, 2012, 07:54:21 AM »
The Prodigy is supposed to be wired to the brake pedal switch so that it won't come on from inertia alone.  My guess is that yours is miswired or is lacking a diode and the brake light voltage is back-feeding into the Prodigy via the brake switch. I've attached the Prodigy wiring diagram
Gary
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Mark R.

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Re: Prodigy break controler and pulling a car trailer
« Reply #5 on: June 20, 2012, 01:22:49 PM »
I have never seen a brake controller that does not need a brake pedal input to activate.  (in auto mode!)
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lavarock1210

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Re: Prodigy break controler and pulling a car trailer
« Reply #6 on: August 30, 2012, 10:57:25 AM »
In reading this posting again I would think when pulling a heavy load like a car hauler it would be desirable to have the trailer brakes come on when the jack brake is on.  I could see the car trailer pushing the rear end of the MH when under heavy jack brake on a fairly sharp curve.  As I said earlier and others have said you have the gain set too high on the Prodigy.  It should be set so as not to lock the brakes when the manual control is fully activated.  A prodigy that is set up correct should never lock the trailer brakes. Most postings I read about problems with a Prodigy can be corrected if the controller is set up correctly.

 

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