So, I finally came up with my new ideas in case any of you are wondering. I have decided, as soon as ai get it together, to do the EATC. The EATC is the Electronic Automatic Temperature Control. In English this is a digital setup that controls the temperature of the cab by keeping it to a constant temperature and not just heat or air conditioning. It's seems quite extensive but I am up for the challenge and look forward to doing this mod.