I connect my CTEK to the charging positions at the front of the car.
I "permanently" installed the CTEK wires to the large flat positive charging blade and an engine stud.
When I connect the CTEK I channel the wire down to the RHS wheel well and close the hood (bonnet!!).
The CTEK remains outside the vehicle completely so that you see the state of charge.
This is really for the Winter season when the car will get less use.
During the Summer it will get driven a lot with the hood down!!