Can P3 Brake Controller Install in 2015 Ram 5500 with Factory Controller for Use with EOH Brakes

Question

Question:

I own a 2015 Ram 5500 6.7 turbo diesel. The truck factory trailer brake never seemed to work properly so I want to install the tekonsha P3 on to my truck and plug it to hydraulic trailer brake. Will it work? And if so what adapter harness will I be needing? Thanks!

asked by: Benjamin C

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Expert Reply:

The Prodigy P3 # 90195 will fit your 2015 Ram 5500 and will operate your electric over hydraulic brakes MUCH better than your OEM controller. The OEM controllers rarely work well with the EOH setups but the P3 works really well with them. So to install this controller in your truck will require the # 3024-P install harness.

Once you disconnect the factory unit a code will appear on your dash. This error code does not affect operation of the Prodigy but if you want to clear it you will need to visit a dealership to have them electronically disengage the factory controller connection. This will clear the code and your P3 will work fine, giving you superior proportional trailer braking power.

expert reply by: Jameson C

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Answer 1

First of all did this problem just start happening? If the trailer has always worked fine before on the same truck then it's likely a short on the trailer's brake wiring. I would start by cleaning the connector and make sure…

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Answer 2

I spoke with my contact at Titan who said that they have been experiencing some issues with the OEM brake controllers in the 2018 Ram 3500 pickups like what you have. He did say that it is hit and miss at this point so your controller may or may not…

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Answer 3

I have a suspicion about what might be causing the problem you mention. Do your trucks have 6-way trailer connectors? Or, do the trucks have 7-way connectors, but you are using a 6-way to 7-way adapters because the trailers use 6-way connectors?…

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Answer 4

It sounds like you have an intermittent short somewhere in your braking system. The readings you are seeing are correct, because the short is intermittent. An intermittent problem can be very difficult to find, but your best bet is to physically…

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Answer 5

What you will need to do is test the brake output circuit of the trailer connector on your tow vehicle with a circuit tester like #PTW2993 to see if there is a constant voltage that is getting applied to this circuit. It should only have voltage when…

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Answer 6

Check out the picture I attached that shows the electrical connections that the Titan BrakeRite #T4813100 will make. I also attached installation instructions for this product for you to check out. The updated version of the Titan BrakRite is the…

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Answer 7

According to Titan, if only the white and black wires are connected, the hydraulic pump should not run. With those two wires attached, the pump should start when the blue wire is touched to the positive battery terminal. The folks at Titan tell me…

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Answer 8

Something is obviously causing a voltage drop between the brake controller and the trailer connector. The usual culprit in this type of situation is a break in the wire or a corroded wire. Check the wiring under the truck. You should be able to trace…

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Answer 9

The first thing to check is the connectors to make sure there is no corrosion present. That can cause a variety of problems. If that checks out you will need to do some other testing. You can sever the blue wire about 4 to 6 inches from the back of…

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Answer 10

If your exhaust brake lights up the brake lights of your truck then the P3 #90195 will activate the trailer brakes at the same time. It's my understanding that when you use an exhaust brake the brake lights don't light up in most situations…

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Answer 11

It could be that your reverse lockout solenoid needs replacement. Part #T4748800 is the replacement part. But I suspect your master cylinder is the cause for the brakes staying locked up until you release the pressure from the bleed valve on one of…

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Answer 12

Your trailer might be possessed! If the trailer has a battery on it with a breakaway system then that is likely where the power was coming from. Even if there wasn't a breakaway system, if there is a battery on the trailer then it is possible…

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