Purchased brand new but couldn't find any installation instructions in the box, anyone know were I can get some? This is for a 02 viper, adding Electric start.

If your lucky they might let you take it for a while or copy part of it for your instalation . It's not that hard to do but the book will save you some agrivation .
I had my dealer order me the service manual when I baught my 03 glad I did .
Good luck .