How to disconnect car alarm?

Answer 1

OK, Here is what I've found out on how to disable the alarm on the park avenue. Due to the "wart" on the key you really cant disconnect it otherwise it shuts off your fuel pump and starter. This is a problem I currently have and have found this information useful. There are 2 wires attached to your ignition, they make a circuit that turns off the security system using the wart on your key. Now you can splice in a series of resistors that match the frequency on your wart. Now I havent had a chance to do this yet because i cant get the lower dash panel off so any help there would be much appriciated. If you have instructions and bolt locations for that dash panel i would really like those please. Below are the detailed instructions that a friend gave me on how to bypass the security system and wart.

How to bypass the Buick (GM) �resistor key� security function when it quits working because of a broken wire or worn out key contact:

The symptoms vary, but since this �problem� instructs the security system to cut off the fuel pump and disable the starter, you will find that your car will make no attempt to crank when you turn the ignition switch and if you jump 12 volts directly to the starter, the engine will crank & then cut off.

First you have to measure the resistance of the "wart" on your ignition key with an ohmmeter. You can probably get someone at RadioShack to do it for you. The little metal pieces that stick out to either side are where you measure it. You will need three hands to do this. There are about 15 possible resistances (chart is below). Get reasonably close to the measured resistance with small (1/4 watt or so) resistors from RadioShack. Plus or minus 15% seems to work OK. You could also buy a variable resistor & set it to the correct value.

• • • • Instructions****

Resistors vary a bit, so you might want to assemble the resistors and then measure what you've actually got.

This site will calculate combined resistances for you: http://www.1728.com/resistrs.htm. You may need this if the needed value is hard to arrive at with available resistors. I can help if this doesn't make sense to you.

Next you have to find the two little (white on my car) wires under the steering column. These wires are somewhat fragile and much smaller than most of the other wires under there. They run up to the back of the ignition switch. I cut the wires about 8� from where they go into the connector at the base of the steering column (toward the front of the car). The connector may be orange, but this is not always the same on every model car.

Splice the bypass resistors between the stripped ends of the two cut wires going into the connector, not into the ignition switch. I used very small gray wire nuts (they are color coded by size).

Make sure you put the resistance in line with the wires going to the security controller, not back to the ignition switch. It is easy to get mixed up when you are upside down under the dash.

Send me a digital picture of your wires if you have any trouble identifying them.

You may contact me with other questions about this procedure.

This was a good fix for my Buick & several others. It should work for yours.

Please let me know if you are successful with this.

Below is a list of the actual ohm values GM seems to use (it is from another web site, so I cannot verify it).key number - resistance (ohms)1 4022 5233 6814 8875 11306 14077 18708 23709 301010 374011 475012 604013 750014 953015 11800