When I replied, I was under the impression that the poster was asking about
leaving the driver's door open. I now see that he probably wants to have
any, or all, doors open without hearing the chime.
It's more work, but it still has to be done by spoofing each door ajar
sensor, as the chime is integrated into the instrument cluster, and can't be
easily disabled on it's own. In this case, one could obtain all four wires
at the instrument cluster connector.
To remove the instrument cluster, remove the two screws that hold the
cluster bezel in place. These are on the underside of the bezel, and you'll
need a short, stubby phillips to get them out. Once the bezel is removed,
four screws hold the cluster in place. Pull the cluster forward, and
disconnect the electrical connectors.
Of the three cluster connectors, you're looking for the 26-pin gray
connector. Pins 1-4 are the four door sense circuits (1 - violet, driver's
door 2 - violet/gray, left rear door 3 - violet/yellow, right rear door
4 - violet/white, right rear door).
Again, depending on the operation of the door latch, you'll either need to
tap into all four wires and switch them to ground, or cut all four wires and
insert a switch into the electrical path. My guess would be that the
circuits are grounded when the door is closed, but double-check just in
If they are grounded when the door is closed, resist the temptation to just
tap all four to the same SPST switch. You'll disable you door ajar sensors
completely this way, unless all four are opened. You need to use a 4-pole
switch (probably need to go to an electrical supply place for this - not
something Radio Shack would carry).