As I explore my new to me 1988 328 I decided that I should probably put a pig tail for a trickle charger (really a battery maintainer) on the battery. I did a thread search and see a bunch about batteries and charging but none with what people actually do. I live in the northeast and might go for a long period without driving it over the winter. That being said, I don't want to unhook the battery as any nice day I get, where there is no snow or salt on the ground, will be a day I want to drive, and I don't want a small project such as reconnecting a battery to stand in the way. I have two ideas - cut a slot in the plate over the battery and snake the pig tail through the spare tire; or let the pig tail drop down and plug it in under the car. I have to say that while the second option means no cutting or anything else it is a pain to lay down on the dirty garage floor even with a blanket to lay down is annoying. Accordingly, I may go with an option that allow me to plug and unplug from the top but want to see if anyone has any advice and/or pictures of what they have done. Many thanks!