The Ground Control 3.0 harness won't work for motorhome leveling system, but you did find the right replacement harness for the Lippert Control Panel with Amp Connector for 4-Point Leveling System # LC175225. We did confirm with the manufacturer, Lippert, that the correct harness for you is the one you mentioned:
- Replacement Lippert 4-Point Leveling System Control Brain Wiring Harness # LC178278
That said, I can't recommend splicing this harness into the wires as they could be damaged. view full answer...
In order to get the hitch ball down to the height you are looking for to use your Demco Kar Kaddy SS # DM9713045 you are going to need a ball mount with an 8" drop. I recommend the Curt Ball Mount for 2" Hitches - 7" Rise, 8" Drop - 9-3/8" Long - 12,000 lbs # C45448. You will also need the # A-90 for a 2" ball.
From what I found about the tires that come with a 2021 Hyundai Elantra Hybrid, you either have a 205/55R16 tire or a 225/45R17 tire. The correct wheel strap for either of this... view full answer...