NSS how to?

I beg to differ. The 791 has built-in starter kill.  Here's my suggestion.

Cut vehicle's starter wire.

Large green of 791 connects to starter wire at key.

Large purple of 791 connects to purple of NSS.

PURPLE / white of NSS goes to starter wire to starter side.

If starter kill of 791 is active then obviously vehicle won't start with key.

plus if you wire it that way the only way to make it start with the key will be to perform the nss' activation sequence or else the internal relay on the nss wont complete the circuit.......keep the nss out of the starter cut circuit....there is no continuity between the purple and purple white until the nss sees that sequence.........

im sorry that post should have read

- wire in the purple and purple white to the negative start output from the remote start before the relay pack...........not the second negative start....the negative start thats part of the ribbon cable, and you should be fine.........It will always prevent the vehicle from remote starting if it hasnt seen the activation sequence.......and it will not interfere with the vipers starter kill or the ability to start it with the key......