I just became a new 240SX (1992 - so it's me that's new, not the car) owner, but the seller didn't have a manual. So, I'm left with at least one question that I can't figure out - where is the jack hidden? Any help out there?
What kind of 240 you got? If its a coupe like mine, its in the trunk on the driver's side. There is a plastic flap, no carpet, it'll be inside the rear fender right under the antenna. The first thing I'd get if I was you is a Chilton book for your car. Its much better than OEM!