The rear light is very easy to install, since the distances of screws are standardized. It fits and its dimensions both for Pletscher XLC SL and the carrier. The connector can be plugged only fiddly at all taillights, so I do not see that as a lack of - especially the plug yes also to keep and therefore have to sit tight.
This taillight we bought new today, but exactly the same for more than 2 years does uncomplainingly his service to our Bahnhofsrad = null care and just do not make it look too good, otherwise it will be stolen (which is why we also have the mounting nuts approximately filed).
I fat a external connections and will rub the nuts and bolts with ELASKON against corrosion. This old DDR panacea creeps into every crevice when the sun shines warm. Therefore, the housing seams are now sealed.
If someday the capacitor fails, it is still a good tail light with which you will be well perceived as cyclists even in fog or heavy rain.
So:
Installation = easy
Security = high
Price = fair
Buy = YES