I recently purchased my first Volvo without the electronic speedo. I need to remove the instrument cluster to replace a bulb or two and check the voltage regulator. I have spent about two days unsuccessfully trying to un-mate the odometer cable so I can pull the cluster out far enough to do the work. Is there some trick or magic word (other than the four-letter ones I've already tried) to unscrew this cable? Alternately, is there another way to get enough access to the pertinent parts of the cluster without removing this cable? Thanks much.