I saw a thread yesterday that is now closed about not being able to get a wrist macro to work.
I was working on my macros last night and today (for the first time) and with much trial and error have found a way to equip all my necessary slots.
While normal /equip wrist "__" and /equip ear(s) "___" did not work, what ended up working was, ridiculously, this:
/equip L.wrist "Item"
and
/equip L.ear "Item"
(even though there is only one ear slot and one wrist slot)
Hope this helps.