I did give a warning in post #6 in the TSDZ2 thread about the cable guide under the bottom bracket:
To anyone contemplating the same kit, you will need to file down the cable guide and shorten it a little bit so it's just tall enough to hold the rear derailleur cable. It is not difficult but time consuming to do, as I did for my Giant.
http://wooshbikes.co.uk/2018/tsdz2/giant.jpg
Also on the web page, it's a common issue for all bottom bracket motors:
Be aware of the physical issues around the bottom bracket:
Like the BBS01B, the TSDZ2 will fit bottom brackets whose shell is 68mm or 73mm long.
However, the space between the motor's bottom bracket and the motor's housing may not be enough to accomodate your cable guide.
If your bike has one mounted under the bottom bracket shell, please email us a picture for advice.
Also, if your bike has a side kickstand mounted close to or right behind the bottom bracket, please email us a picture for advice.
http://wooshbikes.co.uk/?cdkit#tsdz2