I'm halfway across the world trying to do a basic install in my father's 2000 VW Polo in Portugal. I'm experienced with installing and vacuum locks, but I'm having trouble with the alarm itself.
My goal is to do a simple keyless entry install.
I have 12v constant on red, ground on black, correctly identified lock/unlock wires and they are wired up (verified by putting 12v to them).
Initially I had yellow (ignition) wired to the same as red, but realized I need at least a temporary toggle for the valet switch.
Right now, I can successfully lock the car, but unlock does nothing other than two clicks on the brain. No voltage detected at the output.
I've tried using the valet switch and can't seem to get into programming mode no matter what (I've read the manual and watched videos).
Wondering if I need to worry about the door trigger input - both the blue and green wires of the main harness have constant 12v coming out of them, not sure they should?
It's possible I just have a defective unit but wondering if I am overlooking something simple. This is an all or nothing install, so it's not like I can go get another one or choose a different, simpler unit.
Thanks!
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newbie
We don't have the Polo here in the states, but looking at the wiring info on
Bulldog for late model VW's, it shows they use the same wire for lock and unlock. Both use negative pulse, one is through a resistor (180 or 250 ohms seems to be pretty common).
Since the blue and green door lock output wires output a negative pulse, they rest at 12 volts positive.
One way to test the output of the door lock wires is to connect a relay. Hook up one coil terminal (85 or 86) to 12 volts positive. Connect the other coil terminal to either your green or blue wire. Feel for the relay to click when you press lock/unlock on the remote.
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My ex once told me I have a perfect face for radio.