Hi, my 2012 would turn the windshield wipers on while I used my turn signals. Lucky it was still under warranty and the dealer replaced the turn signal/headlight multifunction switch and it resolved the problem. The dealer mentioned they found other tech notes about faulty switches. My understanding is that the column components have remained unchanged or very similar in our JKs. I'd bet the switch is in need of replacement. I'd first ensure you complete some basic troubleshooting, like checking for good connections and wire shorts.
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