Mine came with the 12V cord, I already had an AC adapter since it uses the same one as the Sirius.

I think the mount tracks well although I have not done anything but lunar without guiding. I have let it run for up to four hours on a target when using it for visual and when I came back it was still dead center.

Hope this helps.

Does the SVP come with a power supply or a 12VDC cord? Or do I have to purchase those things separately?

Also, what are your thoughts on the tracking accuracy of the mount without autoguiding?