The bulletin boards and forums have been very good to me and have enabled me to convert a hobby into a small thriving business which brings in work just through reputation, without the need for any advertising. This is compensation enough

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Phil
P.S. I think that your E53 6HP26 may have the electronic park lock (?) in which case you have the ‘E’ version of the Mechatronic unit which is fitted with the additional two ‘on-off’ solenoids. My photos show the ‘M’ version which is fitted to the Range Rover where the park lock and manual valve are activated manually (via an old-fashioned cable from the shift lever). The Zip Kit is the same for both though.