Well, as a matter of fact I just repaired the cable linkage on my rear motor mount again today because my previous attempt failed. Unless I"m hallucinating, the rear motor mount has a cable attached from the throttle to the mount.

The linkage is underneath the mount. It is visible if you look between the rear of the subframe and the rear of the firewall. You have to look from under the car. It's hard to fit your hand through there. I actually had to use long needle nose pliers to perform the repair. If you use jackstands or such, please be careful. ( 1994 accord ex automatic ) and it's white, if that helps. heh.