viper 4115 remote start won't

Find yellow and black 20 gage wire from ignition switch, use a multimeter to check resistance.To check, place emergency brake on, cut yellow wire,shifter on reverse, black wire from multimeter to black wire from switch (ground)red wire from multimeter to yellow (cut) toward switch try to start and hold (read resistance)try same way with other side yellow wire.use the higher resistance value. find a resistor. Connect one side of resistor to black wire from car, the other side to yellow going away from switch. tape the yellow wire going to switch.Hope this works.( do not forged to place car in park to try.)

Ok.....all the info from here was pretty good, I found all the wires to bypass the pass lock. On another forum a guy told me to get a 4.7k and connect it to the yellow20g wire and the ground, I did that. Then he told me to do a key learn...10min on then off, wait 5sec and start, which it did start. The following day I went to start it and it only just crank, no run. The security light was flashing, not to mention it stayed on the day before after I put the 4.7k in but it still ran with the light on. Can anyone tell me what's going on?pg

You need to read what the resistance is from your key cylinder (yellow wire). Learning a new value only works temporarily. Match to what the key cylinder is giving you within +/- 10% (closer the better) and it will work without fail. To master and control electricity is perfection. *evil laugh*

I just re-read your last post. Which side of the yellow wire did you put your resistor on? You did cut the wire correct? The security light staying on tells us that you never reconnected it, or connected your bypass to the wrong side of the cut. With the security light ON the vehicle is totally ignoring the passlock system.To master and control electricity is perfection. *evil laugh*

http://www.gmupfitter.com/publicat/bull/bull26.pdf This is some good information on how passlock works. Ignore the toggle switch installation, or if you decide to follow it I think they describe the operation of a standard 12v toggle switch backwards. At least the old copy I have did.To master and control electricity is perfection. *evil laugh*

Ok...got it. I used the orange and black20g instead of the solid black, found the correct resistance 1.37k.....did the 30min learn...boom!! Light off engine running. No problem......you guys don't know how much y'all help me.pg