Trailer ball height

I would also load the TV as you normally would for a trip. The weight reward of the TV rear axle will make a difference in how the truck sits and I think it gets calculated into the tongue and hitch weight formula.
Correct me if im wrong.

Start out with a level trailer. I measured the bottom of the TT frame to the ground, front and rear. When I did my trailers, my loaded trucks ball was about 1" higher than the inside of my coupler. Right or wrong, it worked, it tows fine. Hitched up, truck sits level and the TT sits level maybe even very slightly lower.

On a flat and level surface, with nothing hooked up, the top of the trailer hitch ball pocket (on the level trailer) should be the same height as the top of the trailer hitch ball (on the level tow vehicle). You adjust tow vehicle ball height to accomplish this as the trailer ball pocket height is non-adjustable.

Obviously, after making these measurements and settings you will have to raise the trailer tongue (unleveling the trailer) enough to get the hitch ball under the hitch.

After connecting, other factors like tongue weight and spring bar tension will come into play. However, start out with trailer and tow vehicle equal.

Dealers seldom set up a trailer hitch properly.

The dealer set ours an inch high. It works for us. It is the WD hitch that sets the TT level with the TV.

I have found that level depends on the ground you are on. I have had level vary significantly on the same trip; depending on the parking lot, gas station, or rest area it was on.

If anything, I keep the TT nose down.

The height of the ball should be set such that the floor of the trailer is level. Its relation to the receiver is not at issue.

Been lurking here for months soaking up,the info like a sponge. Simple question that I have saw many answers on from posts and videos. Is the top of the hitch ball supposed to be level with the top of the receiver when backing up to hitch up. Or is the ball supposed to be 1" or so higher. Have used both ways but looking for the correct install. Thanks for the help.

If you have a tandem axle trailer it should be as close to level as you can get it hitched up. That sets the ball height.