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Expert Answers about Jeep JL Wrangler


  • Can Trailer Wiring be Run Under 2018 Jeep Wrangler JL
  • You can absolutely run the 12 volt hot lead of the T-One Wiring Harness # 118786 under your 2018 Jeep Wrangler so long as you can find a way to route it to your battery. In fact, the linked directions state this as an option, which you can see by the accompanying cut out.
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  • Does Muffler Need to be Lowered to Install Curt Trailer Hitch on a 2018 Jeep JL Wrangler
  • According to the installation instructions for the Curt Trailer Hitch Receiver # 13432 they say that you need to detach the muffler from the hanger to ease the installation. We have had some customers install it on their 2018 JL Wranglers though and say that the install time was very minimal so you may be able to install it without messing with the muffler like what we show in the linked install video on a 2018 JK. If you do happen to have to lower your exhaust it actually isn't very difficult....
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  • Mounting the MORryde Trail Kitchen with Stove Tray to Goose Gear Platform System
  • The MORryde Trail Kitchen with Stove Tray for Jeep Wrangler or Wrangler Unlimited, # MR73QR can be installed either using a no-drill plate or by drilling holes in a set pattern through the floor of the Jeep. If you are willing to drill needed holes in the Goose Gear Platform System then you will be able to use it for installation of the MORryde Trail Kitchen with Stove Tray for Jeep Wrangler or Wrangler Unlimited, # MR73QR. Please note the installation instructions linked below along...
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  • How To Install the Tow Ready Tail Light Isolating Diode System On a 2018 Jeep JL Wrangler
  • I do have an option for you but I would not be able to provide the exact wire colors to splice into for the Tow Ready Tail Light Isolating Diode System with 4-Pole Connector part # TR118821. In order to find out which wire has which function you will need to test the wires behind the taillights while the circuits are active as that will then tell you which wire has which function. I have attached a sample video on this process to show how it is done.
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  • Installing SMI Stay-In-Play DUO on Vacuum Line for 2018 Jeep JL Wrangler
  • I spoke with my contact at SMI regarding the vacuum line on your 2018 Jeep JL Wrangler, as it is indeed bit different than previous model Wranglers. He said that when installing the vacuum portion of the Stay-IN-Play Braking System # SM99251 you will just cut the hard plastic 8mm line like normal and install the included 3/8 inch vacuum hose. They also recommend using a worm clamp for a more secure connection. My contact sent along a few pictures from a JL Wrangler installation that they...
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  • Can Hard Top Be Removed with Rhino-Rack Backbone Mounting System Installed on Jeep
  • The Rhino-Rack Backbone Roof Rack Mounting System # RRRJLB1 is designed to reinforce the structure of your Jeep's hard top so you can carry more weight but it won't physically interfere with the removal of the hard top. Once installed you will still be able to take off and re-install the hardtop on your Jeep without issue.
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  • Does Wiring Harness on 2018 Jeep Wrangler Need Hot Lead to Battery?
  • The T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56407 that fits your 2018 Jeep Wrangler MUST have a hot lead run to the battery because the port you are referencing is not rated to handle additional amperage. Using this instead of a battery can lead to a fire or fried electrical circuits in your vehicle, so please run the hot lead to your Jeep's battery.
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  • Curt Echo Won't Power On Using 2018 Jeep JL Wrangler With Mopar Trailer Wiring Harness
  • The Curt Echo part # C51180 has no correlation with the trailer lights. I don't know much about the Mopar Trailer Wiring Harness as it is not one we carry but what I can tell you is that it more than likely isn't fully hooked up. By this, I mean the battery trailer charge line is most likely not run. Therefore, you'd need the Battery Charge Line Kit part # RM-156-75 running one end to the battery and the other to the trailer connector.
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  • Can I Cut the Upper Shank of the RV Rider # HLY64FR to Accommodate Spare Tire?
  • This is a great question! Ideally, we generally recommend not modifying any aspect of a bike rack like your RV Rider # HLY64FR. This is because manufacturers put the rack through strenuous testing under controlled conditions that test the integrity of the rack. For this reason, removing your tire is the safest route. With that being said, since taking off 1/2" of the forward end of the upper shank does not interfere with any connection point, bolts, or hinges on the rack, you should be...
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  • Mounting Location for Breakaway Switch on Roadmaster Base Plates for 2018 Jeep JL Wrangler
  • The Roadmaster Base Plate Kit # RM-521453-4 referenced in your question does not feature a mounting space for a breakaway switch. This is really the case for any of the base plate kits we have available as it's really best to attach the breakaway switch and bracket directly to the vehicle and not an external attachment like the base plates or tow bar. On your 2018 Jeep JL Wrangler your best option may be to attach it to the underside of the front fascia/bumper.
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  • How to Make Vaccuum Line Connection for SMI Air Force One on 2018 Jeep Wrangler JL
  • I checked with SMI and when I asked them for help they sent me the picture I attached to this page that shows how they made the vacuum tee connection on a 2018 JL Wrangler just like yours.
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  • How To Activate The Third Brake Light While Flat Towing A 2018 Jeep Wrangler JL Rubicon
  • Since the 3rd brake light on your 2018 Jeep Wrangler isn't tied into the same wiring you would need to use a converter like # 118158 and tap into the combined turn/brake circuits for the # RM-152-98146-7. The red output wire will need to be ran to a diode # RM-790 and the Yellow and Green wires can be capped off with some electrical tape. The other input terminal for the diode will need to be spliced into the factory power for the 3rd brake light. The output terminal of the diode will then...
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  • Why do Trailer Wiring Harnesses Have Separate 12 Volt Power Wire on Newer Vehicles
  • The separate power wire for trailer wiring harnesses is becoming more and more prevalent these days because vehicle manufacturers are designing their tail light circuits to use less power. More and more vehicles are coming out with LED tail lights or advanced circuitry like pulse width modulation. This means that the factory tail light wires on the vehicles are not designed to handle the extra load of the trailer lights. Trailer wiring harness manufacturers like Tekonsha, Curt and Hopkins,...
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  • Does The Curt Echo Require The Curt Echo Phone App To Be Running To Work?
  • The Curt Echo # C51180 remembers the last brake setting used so you do not have to run the Curt Echo app the whole time you are towing. As the controller is proportional it will increase and decrease braking force based on how hard you are braking.
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  • Prodigy P3 Brake Controller Installation in 2018 Jeep JL Wrangler without Tow Package
  • Brake controllers like the excellent Prodigy P3 # 90195 use the vehicle brake light switch to deliver the electrical signal that tells the controller your vehicle is braking, and from there the built-in accelerometer sensor determines the amount of braking power that needs to be sent to the trailer's brakes. This is how all proportional type brake controllers operate. They take in the triggering electrical signal from the pedal and then proportionally deliver brake power to match the rate...
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  • Does Roadmaster Universal Brake Monitor # RM-9530 Work without Breakaway Kit Installed
  • I spoke with my contact at Roadmaster and he informed me that the Roadmaster Universal Brake Monitor # RM-9530 that you referenced will work without a breakaway kit installed. Reason being is that under normal circumstances the breakaway circuit of this does not have any voltage on it and it's only when it sees voltage does it know that a breakaway system has been activated.
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  • Does Trailer Wiring Harness have to Connect to Battery on a 2018 Jeep JL Wrangler
  • There are several reasons why the power wire has to connect directly to the vehicle battery when installing trailer wiring harness # 118786 on your 2018 Jeep JL Wrangler. First, the 12 volt accessory circuit was not designed to support the additional power draw of the trailer wiring harness. A wiring harness must have its own dedicated fused connection to the battery. Second, attaching the power wire to the battery maintains the level of separation between the vehicle wiring and the...
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  • Installation Process of the Westin Pro Traxx 4 Oval Nerf Bars on my 2018 Jeep Wrangler JL
  • While we haven't had the opportunity to make a video on the 2018 JL. However the installation is quite easy to do with simple hand tools! It can be done in around an hour plus or minus a few minutes. Westin designs most of their kits as a no drill installation which applies here. On the pinch weld where the rocker panel meets the floor there are holes available for mounting and holes just below those to give the structural integrity. The four brackets will attach to these already existing...
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  • Which Wires Are the Diodes Installed on for the Tail Lights on a 2018 Jeep Wrangler JL
  • I can confirm when installing the Roadmaster Universal Hy-Power Diode Kit # RM-154 on a 2018 Jeep Wrangler JL that the tail light wire on the driver's side is white and grey, and the tail light wire on the passenger side is white and orange. These will be the wires you'll use to connect the diodes on the kit to. I've also linked an installation video of this wiring kit on a similar Wrangler JL for you to use as a reference.
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