1992 240sx se remote start trouble

I'm installing a Viper alarm system into a 1992 240sx SE, when i hit the remote start button the ignition cuts on, and the lights on the dash light up, my seat belts also go back, but the car does not start. i have read in areas that this car has 2 ignitions i can not find the second, any ideas as to where its located or, what i might be doing wrong?

you have a second starter wire.  prob can use 2nd ignition output from R/S to power it as well.  No second ignition that Ive seen in that car. it is BLACK / YELLOW.

do you know which wire goes to which?

The wires coming off the key cylinder are this

BLACK/ greenBLACK / YELLOWBLACK/ whiteWHITE/ redblue

My remote start harness is this

purple - (+) starter output to starter (starter side)green - starter input from ignition (key side)red - (+) high current 12v inputorange - (+) output to accessory curcuitpink - (+) output to primary ignition circuitred - (+) high current 12v inputpink/white - (+) output to second ignition circuitRED / white - (+) high current 12v input

ok, also i have tried the single wire system, and it is unlocking, but not locking... what is going on with that? https://www.the12volt.com/doorlocks/page2.asp#n1