My JLU Sahara, currently on a train car between Toledo and here, is destined to travel many miles being flat towed.anyone know of a tail light wire kit for JL. Had a plug and play kit from Hopkins for JK. Does the diode kit work on JL.
[ 82215382 ]Does anyone know the differences in how the CoolTech and Mopar flat tow harnesses work?
Mopar part #82215382
In respect to Diode systems (item 1), it appears that Roadmaster has a relay to overcome this problem.My JLU Sahara, currently on a train car between Toledo and here, is destined to travel many miles being flat towed.
In respect to wiring I evaluated four option:
1. A diode enabled wiring harnesses such as from Hopkins, Blue Ox or others. These systems can be installed and used but some conditions may result in inadequate lighting.
2. You can install an auxiliary light bar and hard wire it to your towing vehicle connection. This is an inexpensive and simple system that enables easy diagnosis of problems. It requires routing of wires from front to back and the addition and mounting of a light bar or placement of magnetic light.
3. Several wireless lighting solutions are available. Some are battery operated and others can be connected to a 12v port, like the one available inside near the Wrangler tailgate. The sender units plug directly into the connector on your towing vehicle and most include magnetic mount tail lights.
4. The final option I considered is the wire harness from CoolTech. I do have some concerns with splicing into my factory wiring harness. In the end, this is the option I have chosen to go with.
I will go on record to say this is 99.99999% not true. The Mopar harness will NOT "power" the hydraulic pump in the JL.Pretty sure the Mopar harness provides power to the EPS system to prevent death wobble issues Cherokee had.
I believe in researching the heck out of things, possibly because, prior to retirement, my technology career demanded it. I also enjoy sharing what I learn and hence my response to another JL owner's request for flat towing information. I prefer to provide the information and allow each person to make their own choice of "what's best" based upon their unique wants, needs, and circumstances. You may have also noted that in item 4, I stated: "In the end, this is the option I have chosen to go with.", in reference to your company's solution. As stated, I had some concerns regarding splicing into the factory wire harness, but then a diode based solution also requires splicing in.Hi Ron - it really seems that you are doing your research and that's great. When we designed the Cool Tech kit for the JL, we tried very hard to do as much research as possible and come up with the best kit available. The "competition" if you will, is the various diode-based systems and the separate bulb and socket universal kits. We sought to be better, easier to installand, most importantly, OEM-like in lifetime longevity. Here's the not-so-horrible part of our install. You will end up cutting 4 OEM wires - the running light and the stop/turn for each tail light. This will leave you with (8) wire "ends". We ask you to strip and insert/crimp these wires into our already installed (and half heat-shrunk) butt connectors. That's it. These connections are made inside of the Jeep with no exposure to weather. But, perhaps the best attribute of the system is that we are NEVER connected concurrently with the OEM wires - so no possibility to interfere with the Jeep electronics or computer systems. Simply stated: With the switch, the JEEP is connected to the rear lights (just like OEM), OR, the MH is connected to the rear lights. When the MH is connected to the lights, it is literally impossible to have back-feeding or interference because there is simply no physical connection to the rest of the Jeep. It really is 100% isolated. Better-than diode isolation. No voltage loss from diodes. No risk for diode failure.
With a diode-based system, typically you are making more connections, with lesser quality components, on exterior wiring. Further, you have to either live with the turn-signal wash-out problem or install even more wiring (and relay) to try to solve the problem. This is a lot more effort and more invasive than the Cool Tech solution. In fact, we have tried to make wiring even easier. Many aux braking devices want to have you tap-in to the Jeep's brake light wire so that they can give you confirmation that their braking device is moving the Jeep's brake pedal. As part of the Cool Tech harness, we provide a pigtail wire (once again with a weatherproof heat-shrink butt connector already attached) so that you can connect it to your Aux Braking device. This pigtail wire from our harness will be (+) any time the Jeep's brake pedal is depressed (even when the switch is in the TOW) position.