Not EEKeeper, no, as usability is tied to individual items rather than classes. But you could edit each wand and flag each to be thief-usable. Or, if you're mod-savvy you could write a WeiDU script to do it for you - iirc Item Revisions mod changes wands to allow thieves.
You can also give your Thief the "Use Any Item" HLA.
They way I remember it, doing that with EEKeeper involves multiple steps though: First go to the "Innate Abilities" tab, and click "add new" & choose "Use Any Item". Once it's added, load this savegame in the actual game, and use this new ability from the action bar. This should apply the permanent effect to your character. Then save and load it in EEKeeper again, to remove the innate ability again.
Beware that this doesn't just allow the Thief to use scrolls and wands, but also all weapons and equipment that have class restrictions.
Or enter (or copy&paste) the following line into the debug console while the cursor is placed over the character who should be able to use wands: C:Eval('ApplySpellRES("SPCL915",Myself)')
Comments
They way I remember it, doing that with EEKeeper involves multiple steps though: First go to the "Innate Abilities" tab, and click "add new" & choose "Use Any Item". Once it's added, load this savegame in the actual game, and use this new ability from the action bar. This should apply the permanent effect to your character. Then save and load it in EEKeeper again, to remove the innate ability again.
Beware that this doesn't just allow the Thief to use scrolls and wands, but also all weapons and equipment that have class restrictions.
C:Eval('ApplySpellRES("SPCL915",Myself)')