speedo cable removal

Uh huh.
If you take it off the speedo you can pull the drive cable out of the housing and trans drive gear all at once. (without taking the whole housing out of the car)
Putting it back in is just as easy but you have to twist it back and forth as it goes back in towards the end so it seats back into the drive gear in the trans.
Put it all back together and just pull the drive cable out of it from the speedo end.

There is a metal spring type peice surrounding the cable that you have to push toward the speedo to release the cable.
Yours might have the white nylon connector on the end where it connects to the speedo that is the (squeese to release type) release.