viper 571xv what?

"""""""""""""This input comes from the factory set to 2 activation pulses. This means that it is necessary to have 2 consecutive

ground pulses on the WHITE/ blue wire for the remote start to activate or to deactivate. The same holds true

for the remote control activation when set to a two pulse setting it is necessary to press the button twice

for the remote start to activate or deactivate.

NOTE: When the activation pulse count can be programmed to 1, 2, or 3 pulses when changed

it will affect both activation inputs; the WHITE/ Blue wire and the remote control activation."""""""""""

The only thing it skips telling me is, what the heck I am supposed to attach it to. Can anyone decode this cryptic instruction?