It has pics, but it's in black and white, and there are about thirty(I'm not kidding, it really is that many) wires of all different colors to hook up somewhere. The only ones he's figured out is the positive and the negative! I probably will take it to my school. As for why it takes your intake temp., for that, I have no idea, but it looks really cool on the box. It's not a number, it's 5 little dots that glow green, green, green, yellow, red, according to how cold or hot the temp. is. I bought it from
www.autoimaging.com -go there and click on the Pivot Electronics link. It was $105, shipped.