2014 3500 Megacab DRW Cummins. I just installed a MM3 with Calibrated Power tunes on Friday and now I have problems. I have no rear turn signals, no bright lights, auto bright light dim does not activate, and the horn does not honk when you lock and unlock. I had no problems until I installed. I contacted Calibrated on Friday and was told by Chris that there is no way that this was caused by his tune and it was just a coincidence that it happened at the same time. Basically sorry about your bad luck, bye. I am not here to bash them but I need help. I do not want to take it to the dealer. Please help. If I have to pay someone to help it is better than voiding my warranty because of some stupid mistake I made. Thank you in advance.
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