I just installed mine a few weeks back.  I too ordered mine from RNG.  It wasn't hard at all except for the left-hand threaded 33mm? nut was a B*TCH to break lose.  My 1/2" 18V Milwaukee Impact wouldn't touch it so I had to crank up my 60-gallon compressor and get my Nitrocat 1/2" Impact out.  That nut wouldn't break free for the life of me.  I was terrified I was doing it wrong, watched the video over and over.  Finally, I said the hell with it and just kept the impact on it for 15-20 seconds (which felt like forever) and it finally broke free.  After that, it was a breeze!  The only other issue was the bolt on the plastic cover closet to the front of the vehicle was kind of a pain to reach even with an extension and swivel. 

It did make a noticeable difference after installed!  I'm debating on doing the ECU tune via Main Street Cycle as well

I just installed a heated seat on my 2023 UFORCE 1000.  Super easy to do.  Take off the seat, pull out the toolbox, cut out the "knockout", screw the button and plate into the backside of the part you cut out, connect the connector from the seat right to the pre-wired connector that's under there, put it all back together, done.

Just a word of caution to those who want to tap into the rear backup lights to use them as turn signals.....I'd check with your State/County/City ordinances first for making it street-legal.  Turn signals are supposed to be Red or Amber, not white.   

What color(s) did you splice into for the rear backup lights?  Thanks