2008 mazda 3 remote start

hi, I'm looking for the wire colors to do a remote start on a 2008 Mazda 3 I have everything done except for the bypass module I cant tell RX and TX wire pin 1 is WHITE/ light green pin 2 is gray/orange pin 3 is BLACK / YELLOW pin 4 being gray/red With the key out of the car pin 1 has 12v, -----------------RX? pin 2 nothing, -----------------TX? pin 3 ground, and pin 4 nothing. With the key in the car in the on position pin 1 12v, ----------------------RX? pin 2 10.5v, --------------------TX? pin 3 ground, and pin 4 12v. thank yourobert l steckley

Pin#1 RX

Pin#2 TXPin#3 GroundPin#4 Ignition

If using a computer safe test light they will flicker when switched to ignition while being probed. If for some reason it still wont program, switch your TX/RX and try again. You can't hurt anything by being backwards. I have seen them listed backwards on some vehicles before. Good luck.

Ryan Edwards

MECP Certified Installer

Thank you I'll try giving that a shot. I am currently waiting for a new bypass module i sent the other one back because I believe it was defective. I will let you know how things turn out robert l steckley