I use one of these to balance RA on my Skywatcher AZ-EQ6:
https://www.jaycar.com.au/600a-true-...meter/p/QM1632
Don't fall for the trap and get a cheaper AC only model. It wont work.
You must split the mount's figure 8 power lead a few cm and put only one conductor within the clamp.
The RA on these mounts is stiff and very tricky to balance by hand.
From there I move the weights a little either way to make sure the gears remain meshed and not float. East heavy of course.
I first found this method via Cuiv the lazy geek, like everyone else and it does really save time and allows you accurately balance the mount.
Having a multi meter in your kit is also handy for when you have power problems to track down. Adding clamp functionality is not eye wateringly more than a decent normal multimeter.