I have the Maserati CTEK Battery tender connections permanently mounted to battery in trunk, (newest model 1065 with seven stages). Connections are slide over the battery posts under the truck deck as Etodd indicates on right side. There are extra clamps which I keep in the tender box. Took service technician less than 5 minutes to attach the battery tender connections to battery posts when I picked up the car new.
The thin wire cable snakes out of the battery/spare tire area which than connects to tender unit which plugs into your extension cord.
What's interesting is I keep the charging unit on floor by car, while on my Jaguar XKR the whole thing is mounted inside the car with extension cord coming out of trunk. I think the thinner gauge wire of the tender lets me more easily close the trunk.
Seems to work fine for me. I've been traveling in Germany and Switzerland so keep the car plugged in when not being driven for over a week, (travel or bad weather).