from my experience, the equanimity nyana is all about samatha. and i've noticed that, when getting to this stage, be it with candle kasina or not, i just need to put a lot of effortless effort into it, concentrate as much as i can (though not forcefully, but effortlessly), and at some point it snaps into a fruition. it's like a little hump that has to be gone through (note this is my experience for review fruitions, not for new paths)
so try this - just really really concentrate as much as you can, try to observe every tiny detail of every part (though all at once) of the vibrations/formations currently occurring.. by doing this at this stage you will automatically be doing vipassana as well (seeing each tiny part of each vibration = impermanence.. seeing it all happen effortlessly = selflessness.. seeing that putting any effort into it (the 'self' putting any effort into it, vs. letting the mind do it itself) causes disturbances = suffering).
also try reading this post about equanimity, specially going from low to high and into the fruition, before a sit:
http://alohadharma.wordpress.com/2011/06/21/equanimity/. its eloquent wording inspired me to do a really nice review cycle