Looks like all models are in about the same place. My low point is directly in line and behind the passenger side rear tire. If you look in the wheel well, you may be able to see a blue pex tube sticking straight down.
That is where my low point drain comes out. Just in front of the rear tires on the passenger side, I can see the hot and cold (red and blue) tubes.
If you can find them underneath, it should give you a pretty good start inside.
Hot and Cold