Welcome!
The best bet would be to contact manufacturer. Honestly, I don't feel you will find any help there either.
We have had 7 RV's in our family over the years, and there has never been any wiring diagram for any of them. Plus, we have lived in and around the RV capitals of the "world", and know many people that have and do work in the RV industry. Each unit may run wiring differently because of where in line when built, when they wire it. As far as "color code", that is same for all RV's just depends on the year built and the code for that year, but they are all under the NFPA - Standard for Recreational Vehicles, which is set by the American National Standards Institute. Saying all of that, if you are not personally familiar with what the wiring colors are for DC low voltage and AC voltage, I would suggest you contact an RV Tech and have him wire it in. Also, I would not let any "friend" that thinks they know how to do it, help you. I received a call one time after the fact, from my brother-in-law. They had bought a used 5th wheel, without the shore power electric cord. His son, said he thought he knew how to connect everything. Long story short, he did not! He had connected one of the voltage legs to the neutral and vise-versa. Ended up burning by the A/C, furance, refrigerator, 12V inverter, basically everything 120V. He called me, because I have been in the power industry for 40 years, but after the fact, was to late. As I said, if you do not understand NEC, NFPA and RV industry, I would not start wiring anything, without someone with complete knowledge of it.
Hope this helps and God bless,
Mike
