cut the wire (520 gr) on the plug connector that was fitted to the rear wiper motor, crimp a new terminal on it and attch it to the soiinoid, then attach a earth wire to the other terminal on the soliniod and then to a earth poin on the boot.
next u need to go to the drivers footwell area and remove the trums under the steering wheel. you now need to do the following to the wires shown in this pic
after this you should be able to use the rear wiper switch to activate ur boot release soliniod. (rememebr if the solinoid pushes outwards rather then inwards swap the terminals around on the solinoid.