This setup has a separate harness that can be attached to the battery terminals and then routed into the trunk for easy access. It has a rubber cap for the plug when not in use. Just plug into the charger when needed and pull the trunk lid down.
Optimate.My charger is mounted at rear of garage.I open boot,and attach to battery via one quick release plug.I lock the boot catch with lid up so the car thinks its locked.Never have to worry about the battery again.Just unlock boot on fob,unplug jack lead,close boot and away.Great.
I attached mine in the trunk, directly to battery. I just close the trunk on the wire (not near he latch) and leave it. When it come time to go I unplug it, and put the pigtail under the cover and go...Works great so far. Try not to drive away with it attached...ask me how I know