change out 67 dart remote mirror glass

OK, what I know whether it helps or not. 3 cables have crimped terminals, different at each end that for all practical purposes are not removable/reusable. The end you can't see lives between the glass and the tin back plate. That back plate has 3 holes large enough for the controller end terminal will pass through but other larger half ball shaped terminal will not pass through. So imagine a bunch of separate parts at pre assembly. I should add that here is a head post attached to the pretty chrome housing with one screw from bottom up. cables inserted through back plate, mirror glued, cables trapped. Color coded cable sheathes attached to head post, this much passed through the chrome housing.
Other cable ends, ( being color keyed ) , are crimp staked to pot metal spring loaded controller.
How to disassemble... the right small c-clamp and some sort of wood or plastic guide foot protecting the wand will compress the spring generating slack in the cables. Rather than destroy the pot metal crimping/staking at either end, the cable sheathe is spiral steel so the sheathe will unscrew. Unscrewing these cable sheathes without kinking, and counting revolutions so the go back exactly the same, its doable but none fun.
My 67 fish has a long cable right remote mirror with that control wand mounted in a second ignition switch bezel. Only handy pic from early into that project.