Hi York-Jeep07, I know this is probably kind late in replying for this thread, but If the information still applies to your situation, Here is it. I recently run into the turn signal out message after I upgraded my fender DRL/turn signal to OEM LED, and the dealer couldn't get rid of the message. It turns out, there are 2 different types of wiring harnesses: one is "base" and the other is "Premium". the difference between these 2 harnesses is the additional LED fault sensing wire in the Premium. I am not clear on this, but I believe Premium harness is only installed if the Jeep has the LED package and on some highend models like sahara (Overland) or on some Rubicons. So, if you are getting the turn signal out message, it is most likely because you have the "base" or "basic" harness installed (even though you have a Rubicon). And because this wire is part of the central wiring harness, and is not easily upgradable. This is why Mopar does not have the upgrade accessory kit for the turn signals (like the head lights, tail lights, and fog lights). My dealership printed out the wiring diagram for me and explained it to me.
