Hmm, looks like it's the first one. An SL2 sounds about right. I'll give it a go tomorrow before going to work, the portable jumper battery -- AKA the Automotive Defibrillator, "CLEAR!" *bzzzt!* -- is charging up now. I have a feeling though that the terminals are buried, in the back of the battery, towards the dash and opposite the front of the car. Which is going to make jumping this wagon a bit of a pain.

Thanks for the info!