Can A Trailer Wiring Harness Be "Stacked" On A Flat Towing Wiring Harness?

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Question:

I have a 2000 jeep wrangler with a curt 55363 wire harness for pulling a small trailer. Can I also plug in a curt 58902 harness for flat towing the jeep? Can I just plug in the flat tow harness to the jeep then plug the trailer harness in to that and then into the tail lights? Kinda piggy back the plugs at the tail lights

asked by: Steve

0

Expert Reply:

Hi Steve!

You can absolutely install the Curt 58902 flat tow wiring harness with the Curt # C55363 trailer wiring harness you already have installed on your 2000 Jeep Wrangler. It's something that is done very often, but you definitely want to make sure everything is fully plugged in together and all your grounds are good and secure.

Do you have all the parts to get your Jeep ready for flat towing? I saw you got the Blue Ox base plate recently, but do you have a braking system and tow bars?

expert reply by: Lazer S

0

Steve

1/17/2026

Does it matter which harness is plugged in first? Jeep/ flat tow harness/ trailer harness / taillights.

Lazer S.

1/20/2026

@Steve It does not. All the power will be going along the same lines, so you can do whatever is the most convenient for you. That said, I would go the way you said: Jeep - Flat Tow Harness - Trailer Harness - Taillights. I think that would end up keeping all the wiring more organized when everything is being installed.

Steve

1/23/2026

@LazerS Thanks for the helpful information. I'll wire it up this weekend and see where I stand. I'm sure I'll need more parts to get this all set up. Thanks again Steve

Lazer S.

1/28/2026

@Steve You're very welcome! Just let me know if you have any other questions or anything! : )

See All (9) Replies to Steve ∨

Answer 1

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 2

What you need is a light kit specifically for flat-towing. The Plug-N-Tow TM Vehicle Wiring Harness, #42615, would be if the Jeep were towing a trailer and not for activating its lights while it is being towed. There are a few options for lighting…

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Answer 3

Your 2005 Jeep TJ doesn't need to have the battery disconnected when towing but leaving the key in ACC position will put a very small drain on the battery. To resolve this issue you can install the Roadmaster Battery Charge Line Kit for Towed…

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Answer 4

Hey Kevin! The Blue Ox 7-Wire to 6-Wire, Coiled Electrical Cord #BX88206 and the red Roadmaster Coiled Tow Bar Power Cord #RM88BQ both have the same pinout so you can swap them without needing to rewire any plugs on your motorhome or Jeep. Did your…

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Answer 5

I have a replacement option for you, but I reached out to my contact at Blue Ox and unfortunately since the Blue ox Aladdin tow bar BX4325 has been discontinued for a few years there is not a replacement arm available. Instead I recommend replacing…

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Answer 6

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

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Answer 7

How many pins does the connector have on your tow vehicle? If there are six total pins including the center pin you would want the part #BX88206. If instead there are 4 pins on the smaller connector you would want the part #BX88254.

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Answer 8

Thanks for the picture of the front end of your 2005 Jeep Wrangler. Based on that you have the Blue Ox Fixed Arm Kit part #BX1120. For a tow bar the Blue Ox Avail part #BX7420 is a great option as it's easy to use and allows the vehicle to track…

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Answer 9

Yes, the Demco Commander tow bar #DM9511012 will work to flat tow your 1999 Jeep Wrangler. You need several other items to complete your towing setup though. The first thing you will need is a base plate kit. If you have a double tube bumper you want…

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Answer 10

If you already have Roadmaster base plates installed on your 2005 Jeep Wrangler then the RoadMaster Base Plate to Blue Ox and Demco Tow Bars Adapter #RM-033 and the Blue Ox Alpha Tow Bar #BX7380 are a great selection. If you don't already have a…

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Answer 11

The Hopkins Custom Tail Light Wiring Kit #HM56200 will not activate the 3rd tail light on your 2017 Jeep Wrangler because it is created to keep from backfeeding into the wiring on your Wrangler. This is the same case for your license plate light.…

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Answer 12

You are correct that the Blue Ox #BX1120 is confirmed for your 2003 Jeep Wrangler X model, as long as it has the double tube bumper. The Blue Ox #BX1126 is confirmed for 2007 - 2014 Jeep Wrangler, and Wrangler Unlimited without aftermarket bumpers,…

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Can A Trailer Wiring Harness Be "Stacked" On A Flat Towing Wiring Harness?

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