Negative earth simply means that negative is ground, and that's all. Because negative earth is and has been standard for quite some time today on all new cars, you will never see warnings all over the place for negative earth. On some old cars (mainly foreign) the systems used to be positive earth-positive terminal being the ground and hooked up to the frame; the negative terminal hooked up to the starter. There are still endless debates and discussions about why positive earth systems were even used in the first place. I'm not aware of any advantages of a positive earth system. Your battery shouldn't loose charge that fast. Provided all your major ground points are clean (battery to frame, the one by the coil, etc), and all your major positive points are clean (back of alternator, the one on the starter, the one near the coil and even on the battery; just follow the big red and cluster of brown wires); your battery should last a long time. I can leave my car sitting for weeks without unhooking the battery and it will crank over without lacking power. If you don't know how old the battery is-get a new one, but also clean these ground because a new battery will still drain with bad electrical contacts. If you switch the polarities in the DeLorean long enough, you'll find your ground straps on the doors/fenders along with all the ground wires running through out car starting burning up. Your wipers along with a few other accessories will start running without a key in the ignition. So, obviously never hook up the battery or wires inside the coil area wrong or you'll have some burned wires to deal with. Anyway, the way to charge the battery is simply remove it from the car, and hook it up to the charger. Congratulations on the new car -----Dani B. #5003 To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/