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Expert Answers about Jeep JL Wrangler


  • Recommended Suspension Enhancement to Reduce Sag on 2018 Jeep Wrangler JL
  • For the rear sag on your 2018 Jeep Wrangler JL, I recommend the Timbren Active Off-Road Bumpstops - Rear Suspension - 2,400 lbs # TABSJRJK does not allow for spacers so it won't reduce your sag much. My recommendation that will allow adjustment to fill the space and reduce sag is the Air Lift AirLift 1000 Air Helper Springs for Coil Springs - Rear # AL60829. If you want the compressor for adjustability at anytime you can use # AL25980.
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  • Why is the Roadmaster Stop Light Switch Kit Needed for a 2018 Jeep JL Wrangler
  • I cannot tell you the exact "influencer" as you referred to it as but while the vehicle is setup for flat-towing, the brake light switch will shut off after 10 minutes of inactivity. If you open or close the door that will then wake the vehicle up but as you will not be opening and closing the door while in tow you will need to use the Roadmaster Stop Light Switch Kit part # RM-751490 in order for a supplemental braking system to function properly on your 2018 Jeep JL Wrangler. If you...
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  • Roadmaster Hitch Adapter for Flat towing a 2018 Jeep Rubicon and Two E-Bikes
  • I recommend the Roadmaster Dual Hitch Receiver Adapter, 10" Drop/Rise item # RM-077-10. This adapter was designed for this type of set up. Your Jeep Rubicon and Swagman E bike rack weigh well below the 10,000 lbs maximum capacity of this hitch. I have attached a review video as well as a picture that show this rack being utilized in the same way.
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  • Are Diodes Required for Tow Bar Lighting Harness for 2018 Jeep JL Wrangler
  • If you have a plug and play tow bar lighting harness that fits your 2018 Jeep JL Wrangler you would not need additional diodes and you'd be good to go as-is. Now if you have a plug and play trailer wiring harness you should note that these cannot be used in reverse as tow bar lighting so you would need to go with a lighting kit like the Roadmaster # RM-15267.
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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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  • Idler Hub Assembly with 6 on 5-1/2 Bolt Pattern for Timbren Axle-Less Trailer Suspension System
  • To fit the Provider ST225/75R15 Radial Tire w 15" Steel Mod Wheel # TA37VR to the Timbren Axle-Less Trailer Suspension System - 4" Lift Spindle # ASR3500S06 you need the Trailer Idler Hub Assembly # AKIHUB-655-35-EZ-K. This comes with bearings, seals, EZ Lube grease cap, and lug nuts. Please note this is sold in a quantity of 1 so you need to order 2 for the Timbren kit you are installing. I have attached some videos for you to check out as well.
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  • RoadMaster BrakeMaster Custom Seat Adapter for a 2018 Jeep JL Wrangler
  • Yes, the correct RoadMaster BrakeMaster Custom Seat Adapter for the Roadmaster BrakeMaster Braking System part # RM-9100 on your 2018 Jeep JL Wrangler is part # RM69FR.
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  • Which Curt T-Connector Fits a 2018 Jeep JL Wrangler
  • We do have a Curt T-Connector that fits a 2018 Jeep Wrangler JL but the part # C55124 that you referenced does not fit. Instead you need part # C56407 which tees in behind your tail lights and then draws power directly from your battery via the included black wire. The great thing about drawing power directly from your battery is that your vehicle wiring is completely protected in the event that something goes wrong with your trailer wiring. Attached is an installation video of this wiring...
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  • Can Demco Commander Tow Bar be Used with Tabless Base Plate Kit
  • Demco has confirmed that their Commander Tow Bar part # DM9511012 does work with the Tabless base plate kits like the part # DM9519339 that fits your 2018 Jeep Wrangler JL. Sometimes tow bar heights and base plate heights don't line up perfectly. That is why companies like Roadmaster created high low adapters like the # RM-048-6 which can give a 6 inch rise or drop.
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  • Brake Controller Install Harness Recommendation for 2018 Jeep Wrangler
  • Yes, I confirmed with Curt that the trailer wiring install harness part # C51458 that you referenced is a confirmed fit for your 2018 Jeep Wrangler and will make installing a brake controller easy. It will plug right into the port under the dash of your vehicle to make installing the brake controller easy.
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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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  • 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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  • Could etrailer Cargo Carrer e98874 Fit with Rear Spare of 2019 Jeep JL Rubicon
  • The folding etrailer Cargo Carrier part # e98874 has the most clearance of any cargo carrier to fit past the rear spare of your 2018 Jeep Wrangler out there. When folded down it has a distance of 19-1/2 inches from it's pin hole to the nearest portion of the carrier and then when folded up that dimensions is 9-1/2 inches. So determine if this will fit with your spare you'd need to measure from the pin hole of your hitch out to the furthest point out on your rear spare and if it's less...
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  • Will Hollywood Racks Sport Rider Bike Rack Clear Spare Tire on 2018 Jeep Wrangler JL
  • The Hollywood Racks Sport Rider SE2 2-Bike Rack # HR1450Z is 7-1/2 inches to the closest part of the rack so it will not clear your 2018 Jeep Wrangler JL's spare tire. In order to get this rack to clear the spare you will need to use an adapter, the Curt Hitch Extender for 2" Trailer Hitches - 14" Long # C45795. To secure the extender into your Jeep's hitch you will need either the Pin and Clip # PC3 or Anti-Rattle Trailer Hitch Receiver Lock # 63232. I have added a link to a video review...
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  • Wiring Harness Compatible with 2018 Jeep Wrangler JL Unlimited Sahara
  • The T-One Vehicle Wiring Harness #118782 is not a fit for the Sahara or Rubicon models and has been discontinued. Instead you will want the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118786. This harness is the updated replacement for the previous harness that is compatible with your 2018 Jeep Wrangler JL Unlimited Sahara. This harness will install behind the driver's-side and passenger side tail lights. Once you've plugged in the harness, you will run the hot...
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  • Adapter Kit To Connect Roadmaster Falcon All-Terrain Tow Bars To etrailer Invisible Base Plate Kit
  • To connect your Roadmaster Falcon All Terrain, Non-Binding Tow Bar # RM-522 to your etrailer Invisible Base Plate Kit # e98948, you will need to use Adapter for Roadmaster Tow Bar to etrailer Classic Base Plates # e98983.
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  • How to Protect a Toad from Chips or Scratches While in Tow
  • The Snoblock Snow and Ice Windshield and Wiper Blade Cover part # 288-06603 is not designed to be used on a moving vehicle. If used in this fashion then the chances of it tearing would be increased therefore I cannot recommend this. However, we do still have multiple ways of protecting your toad while in tow and not just the windshield portion either. For this, I recommend taking a look at Sentry Deflector part # DM9523135 if you have a Demco Tow Bar, the Guardian Rock Guard part # RM-4000...
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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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  • Correct Axle and 13 Inch Tire and Wheel Kit for Homemade Trailer with 58 Inch Spring-Centers
  • Thank you for all of the info! I'd be more than happy to help out. For an axle that meets your specs I recommend going with our etrailer Trailer Axle # e37YR which has the 58" spring-center measurement, a 72" hub-face measurement, has an easy-lube spindle, and comes with idler hubs that are compatible with a 13" wheel. When it comes to the tires and wheels we have a few options for you; a 175/80-13 size tire would be more than enough and for that I recommend the Kenda part # AM31985 for...
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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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