Equalizer is easy to install if you know the basics of weight distribution and how to calibrate your hitch to achieve your desired outcome. You want the trailer loaded and ready for travel / camping when you install - whatever that means in your particular case.
There are only 3 adjustments you can make when installing the equalizer:
Ball height (adjustment needed for a LEVEL trailer when WD is fully applied)
L bracket location and height (this is your main factor in how much rotational torque is applied to the receiver on your TV - aka weight distribution - adjusting the height of these is like adjusting how many chain links to use)
Head angle (secondary fine tuning of how much torque is applied to the receiver on your TV)
Good video here and the instructions that come with the equalizer are pretty good as well.
If you donít know how to measure the effectiveness of the WD hitch or how to determine how much weight distribution / torque is needed thatís another topic of its own. You must first understand that prior to installing and calibrating your hitch.