Will Hopkins Flat Tow Wiring Work with LED Lights and Sensors on a 2024 Jeep Wrangler JLU

Question

Question:

Will this harness work on a 2024 Jeep Wrangler JLU with LED tail lights and proximity sensors in the bumper?

asked by: Steve

0

Tail Light on a 2024 Jeep Wrangler JLU
(click to enlarge)

Expert Reply:

Hey Steve, thanks for reaching out again!

Hopkins doesn't have any exceptions for their Wiring Kit # HM39VR which normally means it's compatible, but even though this is easier to install than a lot of the other options, from my experience I try to shy away from most of the Hopkins wiring solutions because they just simply aren't super reliable.

The best option for your 2024 Jeep Wrangler Unlimited is the Roadmaster Smart Diode 7-Wire to 6-Wire Wiring Kit # RM63MR and is ultimately what I recommend. I know it's not as cost-effective, but it's way more reliable and comes with diodes specifically built for the LED lights and sensors on your Jeep.

expert reply by: Jon G

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Steve

10/3/2024

Thanks Jon, I am really opposed to cutting up the harness of a brand new vehicle when there are plug and play harnesses available. I do value your experience and advice here. Is there possibly a reliable plug and play harness without diodes that I can modify with the RM63MR diodes so that I can keep my vehicle harness stock? Cost is not a huge factor since I am willing to purchase two harnesses to accomplish this. Thanks, Steve

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Jon G.

10/3/2024

@Steve Fair enough, I definitely get where you're coming from with splicing into brand new vehicle wiring - I would be hesitant as well. What you could potentially do is get the Hopkins Custom Tail Light Wiring Kit # HM39VR for the OEM connectors and 4-Way wiring, and then just get the Roadmaster Smart Diodes # RO54FR from Roadmaster and combine the two. You would need to cut out the Hopkins module (the black box) and hook the rest of the Hopkins wiring up using the remaining wire. You'll also need additional 16 Gauge Wire # 16-1-1 and Butt Connectors # DW05744-10 to splice into the other functions on the OEM connectors. Basically, you'd be doing the Roadmaster installation but building your own adapter to plug into the OEM ports. We haven't done this before so I can't confidently say this will work and give you details on how to do it, but this will be the next best thing that can potentially give you the best of both worlds.

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Steve

10/3/2024

@JonG Thanks again Jon. I think I will give it a shot. Thank you for the additional component P/Ns.

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Steve

12/27/2024

@JonG Hi Jon, The Hopkins harness and smart diode modification was successful at least as far as it has not caused any issue with the operation of the jeep. I have not yet towed with it, but I am getting closer to doing so. I have been researching an issue with the JLUs and want to be sure I have included all the necessary modifications to have a successful towing experience. What I have learned through the JLWrangler Forum is that there are two issues that are draining the vehicle battery while towing. One being the vehicle being “woken up” due to the brake pedal press from the auxiliary braking system and the other being the vehicle being “woken” by the tail light fault monitor line to the BCM being activated when the tail lights/blinkers are activated by the RV. For the second issue, I plan to add a switch or relay to the Hopkins harness to disconnect the monitor wire when in tow mode which was the solution indicated in the forum. For the first issue (brake activation) I was considering the Roadmaster brakelight relay solution. However, I found that Jeep has replaced the brake switch with a potentiometer to measure the position of the brake pedal. A disconnect or disconnect with a resistor may be the solution. Do you have a proven solution for this issue? I assume a charge line from the RV would be a bandaid, but I would like to fix the issue if possible. Waking the vehicle every time the brake is pressed does not sound like a good idea to me. Thank you for your expertise

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See All (4) Replies to Steve ∨

Gene

8/12/2025

Jon, Does anyone make a reliable plug and play system for the 2022 Wrangler? And what other parts do I need for the wiring. My brake subsystem is M&G if that is relevant.

Reply

Jon G.

8/12/2025

@Gene For a reliable plug and play style of wiring harness I recommend the Curt Custom Tail Light Wiring Kit # C96JR. This simply tees in behind your tail lights and then you run the 4-Way connector up to the front of your Jeep and secure it there!

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Gene

8/14/2025

Thanks Jon, The M&G pulls the brake & my brake lights come on with the engine so it sounds like I will need the RM88400. Am I correct?

Reply

Jon G.

8/14/2025

@Gene If your brake lights come on when the engine is off, and the lights have the brake and turn signals combined then yes, you'll also need the brake light kit # RM-88400.

Reply

Answer 1

Hey James, welcome back! The only plug and play wiring harness I have for flat towing is the Curt Custom Tail Light Wiring Kit for Towed Vehicles item #C96JR. This has a 4-way connector that plugs into your motorhome. This plug and play harness…

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Answer 2

Hello Marvin, thanks for reaching out. The Curt Custom Tail Light Wiring Kit #C96JR is correct for the 2023 Jeep Wrangler 4XE. The harness has built in diodes so it is completely safe to use on your Jeep and will not damage the electrical system when…

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Answer 3

Yes, we have the Curt tow bar wiring kit part #C96JR that is a confirmed fit for your 24 Wrangler. This installs by plugging inline with your taillight connectors which means it does not need any splicing.

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Answer 4

Hey Teo, we have a solution for you but we don't have any harnesses that work as both a tow bar lighting kit and a trailer wiring kit. So what you'd want is the Curt part #C96JR for the tow bar lighting and then for the trailer wiring…

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Answer 5

Hello Garry, thanks for reaching out. The plug your are referring to on the Curt #C96JR is actually an accessory port for plugging in a 4-flat trailer harness. The weird part is, Curt stopped offering the 4-flat accessory plug while leaving the…

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Answer 6

Hey Jim. The Curt Custom Tail Light Wiring Kit for Towed Vehicles item #C96JR is indeed compatible with the LED lights on your 2025 Jeep Wrangler Unlimited. It plugs into your factory wiring harness behind the tail lights. The only issue would be if…

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Answer 7

When it comes to choosing between the Blue Ox Patriot #BLU37TR and the Brake Buddy Select 3 #HM39524, these systems are extremely similar in their setup and functionality. Both of these systems provide proportional braking in a compact and easy to…

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Answer 8

Hey Bonnie! There's no reason you couldn't install and use the Roadmaster Battery Charge Line Kit #RM-156-25 on your '22 Jeep Wrangler JL. It's not going to have any effect on the Jeep's electrical system. Now with that being…

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Answer 9

Hi J, Honestly the Curt Custom Tail Light Wiring Kit for Towed Vehicles #C96JR and Hopkins Custom Tail Light Wiring Kit for Towed Vehicles #HM39VR for your 2024 Jeep Wrangler are the same thing. They are both plug-in so you don't have to cut any…

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Answer 10

There are several vehicles that require you to disconnect the vehicle battery when flat towing. The solution then to power a braking system like the Blue Ox Patriot #BLU37TR is to use an outlet kit like the part #RM-9332. This wire directly to the…

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Answer 11

For your 2021 Jeep Wrangler, you actually can not splice into the brake wire. For this reason, you will want to use the Roadmaster Stop Light Switch Kit #RM-751490 instead. This kit will connect to an inline fuse to your vehicles positive terminal on…

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Answer 12

It sure does Troy. I checked with Roadmaster and you will need to use the Roadmaster Brake-Lite Relay Kit for Towed Vehicles item #RM-88400 when flat towing a Rubicon model of a 2020 Jeep Wrangler Unlimited. It looks like you've done a couple…

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Will Hopkins Flat Tow Wiring Work with LED Lights and Sensors on a 2024 Jeep Wrangler JLU

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