Hi Jason, great post. Just completed my retrofit and all went well...almost. The stage you describe as the hardest, getting the blue 'cruise control' wire thru to the DME by way of the rubber grommet hole, was not happening in my case! I could not even get a normal needle thru that hole let alone a knitting needle!! However the friendly guys at BM Workshop made life easy by suggesting shining a torch into the DME box and then looking for the light coming thru. There is an airvent in the DME box and it comes out right beside the rubber grommet! So easy to feed thru the cable!!
Thanks for yor post.. a great help
Russell