Venom 2500
Junior Member
I have a 2015 Ram 2500 Bighorn. I replaced the stock radio with a 8.5 radio from a Laramie. It is better than the stock one with all the bells and whistles. I bought it from a company that also provides the wiring harness. It took my ac fan speed from 3 speed to 7 speed. Everything seems to work fine except sometimes the fan speed slows down on it's own. After speaking to a Dodge mechanic, he said I needed to Flash the stereo because I changed it from stock, my truck doesnt recognize the new radio. Does anyone know what my options are in getting the correct voltage to the fan resistor so the fan motor operates correctly?
