07 nbs sierra remote start

have o7 sierra  installing autopage rs900

and a pkugm2x for bypass

base truck no door modules  so power locks to bcm

ign 1 pink  , ign 2 white   acc brown  (relay -ground for start )

does that sound right? 

i was told the acc wire once it sees ground it enables the starter

by wiring a relay  to create a ground from a positve rs signal 

but yes thanks for the wiring     i found several ones all for nbs    ,

yes your right ,  i was told a relay might be need if the rs acc doesnt show 0 volts when cranking