Troubleshooting Integrated Brake Controller of 2015 Ram 5500 Not Working Well with EOH Brakes

Question

Question:

Eoh brake on a2015 ram 5500 with factory controller and set correctly but only have 8 volts to actuator on blue brake wire. Pump runs and has 12 volts on pump motor but brakes work intermittently. Any ideas ?

asked by: Dave

0

Expert Reply:

Integrated factory brake controller notoriously don't work well with electric over hydraulic actuators. If you let me know what brand of actuator you have I can see if there's an adapter that would work with it or you could always go to an aftermarket controller like the P2 # 90885 which will work very well with the actuator.

expert reply by: Jameson C

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Answer 1

According to Hydrastar, the #HBA-CAM adapter is not required for the 2018 and newer Chevy/GMC trucks. This is true for the Hydrastar Vented Marine Electric Over Hydraulic Actuator #HS381-8067 and any other Hydrastar model.

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Answer 2

It sounds like the 7-Way connectors are not pinned out in a standard configuration. I have included a picture that shows the vehicle side functions of a 7-Way trailer connector. Use a circuit tester such as #PTW2993 to determine the functions of your…

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Answer 3

My suspicion is that you have a poor ground connection somewhere on your trailer. The fact that everything works fine until the running lights are turned on is the dead giveaway. When the tail lights are turned on, the trailer lighting is drawing…

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Answer 4

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…

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Answer 5

I spoke with my contact at HydraStar and he said that the #HBA-CAM adapter will not work with your older HydraStar actuator as you have noted. Unfortunately there are no older 381-7063 adapters like what you need but we do have alternative solutions…

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Answer 6

There is a difference between a 7-way round and and 7-way rv blade connector. If you take a look at the accompanying photo, which is from our linked article on trailer wiring you can see that the connector on the left has blade-style pins while the…

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Answer 7

The old version of the #HBA-CAM used 4 wires, but the product was updated awhile back and now uses only two wires as shown in the photo on the product description page. The white wire from the HBA-CAM would tap into the white ground wire and the blue…

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Answer 8

If your current springs have 5 leaves then going to a 7 leaf spring will increase the height of the trailer a little and make the trailer more susceptible to sway. Regarding capacity if you go with springs rated higher than what is required it will…

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Answer 9

I've never heard of an actual third brake light connector on a camper shell to plug in on a truck and we don't carry any parts to do that. The light generally needs to be hardwired into the truck's brake light circuit. The issue with this…

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Answer 10

Since you have a wheelbase/axle spacing of 38 inches the correct hanger kit for slipper springs would be the part #HAP-105-205-01. And then for a 7k trailer axle the u-bolt kit you'd want would be the part #APUBR-8. I attached the diagram to use…

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Answer 11

I would love to help you upgrade the suspension on your Twilight 2800 travel trailer. The MORryde Rubber Equalizers for Tandem Axle Trailers #MR87ZR that you referenced are a great solution but we do need to double check a few things. First is that…

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Answer 12

If your old axles have a 5 bolt brake flange the assemblies like Dexter Electric Trailer Brake Assembly - 12" - Left Hand - 6,000 lbs part #23-105 or Dexter Electric Trailer Brake Assembly - 12" - Right Hand - 6,000 lbs part #23-106 will…

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