I'm planning on using a solar panel to keep the charge up whilst I'm away. Does anybody know if a 2008 330i will have the cigarette lighter always live?
Alternative is to connect to the battery directly, but that is a bit more involved...
Its only live in position 1, and these being so complex in terms of wiring, i'd go straight to the battery tbh. I have left mine for a couple of weeks with no problems. I do have a booster pack permanently in the boot just in case though.
