Note: I've never seen a mk2 cage, or a tuner module...

You'll have to get behind the dash in some way to connect the tuner...
Where I put my empeg, I can get behind the cage without removing it, so I could plug the tuner in that way...
So it's possible you'll have to remove the cage to get behind it...

I'll know more in a few days when my mk2 arrives... =)

Jazz
(List 112, Mk2 on order. Mk1 Unit for sale S/N 00030, 4 gig blue, apply within)