Parts Needed To Install A Brake Controller On A 2023 Freightliner Cascadia

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Question:

I HAVE A 23 FREIGHTLINER CASCADIA MODEL ES IM NEEDING GUIDANCE ON WHAT PARTS I WOULD NEED TO MAKE MY SYSTEM WORK RIGHT I AM NEEDING THE ELECTRIC TRAILER BRAKE CONTROLLER AND ALSO ALL WIRES AND HARNESS PART NUMBERS FOR INSTALL AND OPERATION. THANK YOU FOR YOUR HELP AND TIME.

asked by: Dustin

0

Expert Reply:

You do have the option to utilize the air brakes on your 2023 Freightliner Cascadia to control electric trailer brakes using the Hayes Air Actuated Trailer Brake Controller, part # HA100400C. However, we mostly recommend just using an electric brake controller since they tie into the stop light switch of the tow vehicle, making it irrelevant what kind of brakes it has.

For an electric brake controller I recommend the Tekonsha Prodigy P3 # 90195. A very solid, user friendly brake controller.

Of course, as with any electric brake controller, you will need a 7-way for the trailer to connect to. If you don't have that, you can use part # ETBC7 to get one. This kit will come with virtually everything you will need to wire the semi truck with a 7 way. Keep in mind that you would have to cut off the 4-flat connector on the back of the # ETBC7 kit and hardwire it in. The white wire goes to ground. Green goes to right turn/stop, yellow to left turn and stop, brown to taillights, and then blue to the brake output of the brake controller. We sell the 4 wire by the foot with part # 16-4B-1 if you need additional wire.

I have linked a few of our install videos for the # ETBC7 kit below, if you want to get a better idea of the install process.

expert reply by: Jesse M

0

Kyle

7/8/2025

I have one question with hard wiring the 7 way to the back of the truck. Do you have to wire together the brake light at the turn signals together to get brake lights on the trailer or does the brake controller turn on the brake lights when the pedal is pressed?

Reply

Jesse M.

7/9/2025

@Kyle yes most trailers use a combined wiring system where the brake lights and turn signals are on circuit so that is how you would want to wire your 7-way.

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Answer 1

The Entegra Coach Vision is built on a Ford F-53 Chassis which means there should be a pre-wired brake controller port under the dash. The exact location of this port can vary but most likely it will be on the left side of the steering column support…

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Answer 2

Typically it's the tires of a utility trailer that get problematic if stored for long periods of times. Although there are not exact rules for how to store a trailer tire. Our experience shows that the most beneficial way to store a trailer tire…

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Answer 3

Hey Bo! To set up your semi for a standard 7-way plug, you will first need the Curt Powered Tail Light Converter item #C59496, which would tap into the circuits feeding your tractor trailer 7-pin round plug. The yellow wire taps into the feed for the…

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Answer 4

The Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Inner Tube #BD0289650300 will work with a Semi Truck Connection. For the light converter, I recommend using the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector…

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Answer 5

Hello Robert. The best way to do this is to wire the semi truck with its own separate 7-way flat connector. For that you can use the Tekonsha #119250KIT and the Universal Install Kit #ETBC7. This will include all of the components needed to wire the…

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Answer 6

Adapter #HM47425 is designed to work with a vehicle or RV style 7-Way round pin so it would not work with the semi style 7-Way for the exact reason you mentioned; the functions are different. You could install a separate 7-Way just for travel…

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Answer 7

The trailer brakes work on a separate circuit than the lights. You have a couple of options to control the electric brakes on the trailer. One option is to use an air over electric brake control, #HA100400C. This unit connects to the air brakes on…

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Answer 8

The king pin dimensions can be the same between fifth wheel trailers and large commercial trailers. Both types of trailers often use a standard 2 inch king pin although semis sometimes have a 3-1/2 inch. As long as your truck fits a 2 inch king pin…

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Answer 9

For hardwiring a brake controller in to a vehicle like your semi you would want to check out the help article I attached that details how to hardwire a brake controller. I attached install instructions for the #90885 as well, but the help article…

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Answer 10

Either way is correct. It depends on if you want to keep the semi-style 7-Way (if you need to tow that type of trailer) or if you will never be towing a semi-trailer. If you need to keep the 7-Way semi active on the truck, then you would need to make…

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Answer 11

When you are hardwiring a trailer brake controller like the Prodigy P2 #90885 the red wire connection that provides the triggering signal to the controller should be made to the wire on the COLD SIDE of the brake light switch circuit. This is the…

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Answer 12

To tow your trailer that uses an RV style 7-way blade style connector with your semi that has a 7-pin connector, you need to construct an adapter that will also combine the brake signal into the right and left directional signal pins. This can be…

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Parts Needed To Install A Brake Controller On A 2023 Freightliner Cascadia

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