Timer "swap"

Hi,
   My timer recently stopped working (I assume the motor has burnt out) so I have tried to replace it with a new version but it hasn't been as easy as the straight swap I hoped for. I currently have an analogue/pin timer that looks like this (http://www.grasslin-controls.co.uk/sbstuzh-sbswuzh.html) but an older version, which is very easy to remove (two spring mounted clips hold it in place). I bought a digital timer (http://www.grasslin-controls.co.uk/sbdigi.html) thinking it would be a straight swap and give me more functionality. However the digital timer has a back-plate with additional wires connecting the timer to a small PCB in the back-plate. I can't connect the crimped leads from the supply to this back-plate, which has several screws rather than pins to connect to. I can disassemble the PCB, connecting the supply directly to the timer itself, but then there is no way to secure the timer in place. The only other option I can think of is cutting the crimps from the supply off and connecting the copper cable to the screw plates on the PCB. Any advice would be greatly appreciated.