And is it necessary? As I am putting my car back together, I dont think it had one when I took it apart 4 years ago. What are the pros and cons of having/not having one? An electric Lokar cable is kinda pricey in the Summitt book.

400 tranmissions don't use a cable. smile.gif The kickdown on those rascals is electric, look for the pigtail connector on the side of the trans and yes, you can run the trans without that connected.