no, the extra diode on the nps wire is only used if you plan on tapping the alarm's hood pin input, though it doesn't hurt to have an extra one.
Originally Posted by Genner
Ign2 of RSX 3.5 is connected to pin 86 and NPS to pin 85. I need a diode across those tho pins, with the ring side(cathode) on the ign2 side.
Do I still need another diode with ring side facing the ECU for the NPS wire that's going to pin 85?