Question for 2011 Jeep Grand Cherokee Limited Owners
I run all Roadmaster towing equipment for my 2012 Jeep GC Overland, so YMMV. However, I do know that my brake lights are NOT "illuminated" by the Jeep brake light system. The wiring harness I added with diodes uses the current from my 6-pin pigtail and a brake pedal switch attached to the Jeep brake peal arm under the dash. My Brakemaster pushes my Jeep's brake pedal, which triggers that switch, which then illuminates the brakelights. Check through your tow gear documents or return to your installer. Something's amiss. The Jeep ignition should be off, key removed and shouldn't be powering anything- it's essentially a trailer under tow.
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1998 Country Coach Allure 36' (CC# 30146), Cummins ISC 325
2012 Jeep Grand Cherokee Overland, Roadmaster Brakemaster & Blackhawk