Where is the blower motor located in a vauxhall vectra 1998?

I have a V reg Vectra SRI 2.5 and the blower motor is situated behind the cabin air intake filter. Remove the top rear engine rubber that fits across the rear bulkhead. There is a flap between the wiper blade shafts which lifts up, remove filter and blower motor should be revealed.

To gain access to the motor it looks like both wiper arms have to be removed followed by the plastis cover that is fitted below the bottom of the wind screen to gain access to the fixing bolts to the filter holder. Once these are removed the blower cover can be taken off exposing the motor.

I have not completed this process as yet but it seems to be the only way.