I have a Scangauge II with the instruction booklet and two cables for sale. The extra cable allows you to install it in a more permanent way in your primary vehicle and use the second cable for other vehicles. This is the way I had it set up in My D.
$100+shipping
Check it out at: www.scangauge.com
Ron
$100+shipping
Check it out at: www.scangauge.com
Ron