Passlock for a 98 silverado

hey I am installing a viper alarm in a 98 chevy silverado, for a guy I bounce with at the club. he's getting remote start, and keyless. no one around here has a Passlock bypass module, so I'll jsut do it old school. Test for resistance, and use resistors...my question is, since it's been about 4 or 5 ears since I did it that way...DOES ANYONE REMEMBER HOW TO DO IT??? links with diagrams would be appreciated... THANKS

Look at Diagram #2 Passlock II Temporary Bypass with a Single Relay To get the resistence value: Strip back the Black wire. Start the car with the key, then cut the yellow passlock wire. strip back the key side of the yellow wire and take a DMM and put one lead on the key side of the yellow wire and the other on the Black wire. Record the resistence, then reverse the two leads and record the resistence. Use the higher of the two resistences recorded as your resistence and then set up the relay diagram using a resistor or a trimpot. Note: For trucks and SUV's the passlock ground wire is ORANGE / Black, and for cars it is just Black, so it may appear that I have conflicting references to the color of that wire, but if you remember this note then it will all make sense. If you dont want to use a trimpot you can just use a resistor, but make sure that you get it very close to the resistence. I have heard you should only allow a 5% tolerance, but I would get it as close as possible so when it gets cold, then it will stay within the toleranceJ Rilla

Owner/Installer

Thanks J Rilla...appreciate it....have a good one