Don't know, but I watched this video last week after someone asked about the wiring and forgot to post it.
If you fancy having a go yourself, https://www.thesamba.com/vw/forum/viewtopic.php?t=445921&postdays=0&postorder=asc&start=0
Often the bushes seize on the shaft ,awkward to get out without damaging housing. You can get brushes worth while so long as slip ring is ok.
