Thanks for posting the drawing robby363, that will help a lot. I kind of figured that the electrical connector was a low coolant level sensor, it's nice to have someone else confirm it though. I've worked on cars since I was 14 years old, of course older cars, these Xfire's are totally different than even some of the newer cars I've worked on so I don't take anything for granted.

Thanks for your input too Jody, I'm guessing the guy's with the 1 to 2 gallon S/C reservior's are putting them somewhere else than under the hood. Only 2 place's I can see to put a second one, but neither place would hold more than a few quarts. I recall a thread where someone had installed a smaller battery, I'm guessing that might be my best bet. There just isn't much room under the hood to add anything. Hell, they couldn't even fit the washer fluid
reservoir under the hood, they put it between the inner & outter fender .