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4th Gen Ram Tech2009 - 2018 Rams and the 2019 Ram Classic: This section is for TECHNICAL discussions only, that involve the 2009 - 2018 Rams and the 2019 Ram Classic. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Only difference in one with tow package is TOW mirrors. Some don't have a hitch. Wiring,cooling system etc. is all the same. Its up to you to get the right geared truck for your application. Wires for a brake controller have been up in left corner of dash for years.
as was said before, our old truck (no tow package) had the plug in the dash, but they were not terminate at the cab connector. I had to run brake/reverse/12V from the cab connector to the bumper in a new loom.