You need the connector from the dash clocks you are fitting. Connect each wire together with the same colours. You will then be left with a green wire on the "new" plugs which goes to the coil (or coil pack if you are still running them) and a red wire from the "old" plugs which is not required (+12v).

IF you are still running a coil pack, then you will need a set of XR3i EFi clocks, if running a coil, then all should be good.