Passenger Door Unlock Tricks
Passenger Door unlock info -
I've uploaded the
installation manual for my ancient "convenience module" (which I no longer
sell) for those that have asked for information on wiring a switch to unlock the
passenger door. Look at page 4 in this manual and pay attention to the
photo and instructions for wiring to the white wire (pin 3) of connector C502.
This wire is attached to the driver's door key cylinder, and if you ground it
for 2-3 seconds it will unlock the passenger door, just like if you hold the
driver's door key in the unlock position for 2-3 seconds. Bear in mind it
will only unlock the passenger door if the driver's door is already unlocked.
This same white wire is also available on the keyless entry
module which is under the driver's dash, sort of behind the radio
dash controls. It's a black box with an 18-pin connector (8 wires in one row, 10
wires in the other). Be careful,
there are two white wires in this connector and one of them is +12v power, so
accidentally grounding the wrong white wire is a bad idea. The white wire you
want is near the middle of the connector and is between a black/white wire and a
yellow wire. The white wire on the end of the connector is +12v power, stay away
from that one.
Here's 2 more ways to unlock the passenger door
1 - The Keyless entry module has two pins for receiving lock/unlock commands
from the security module. A ground on these wires will lock or unlock both
doors. If you have factory security there are wires attached to these pins
so you can tap into the wires. Pin 11 (grn/red) is unlock; Pin 12 (blk/wht)
is lock. But if you don't have factory security there are no wires - just
pins sticking out of the Keyless module and only accessible if you unplug the
connector. You can either solder wires to the pins and run them out the
empty holes in the connector or take the Keyless entry module apart and solder
wires direct to the PC board where these pins connect. Not very friendly
but it works.
2 - Locate the Keyless Entry Module and connect BOTH door locks to the output
for the driver's door. Then every time you unlock the driver's door with
the remote, the passenger door will unlock too. The Keyless module is
under the driver's dash, sort of behind the radio dash controls. It's a
black box with an 18-pin connector (8 wires in one row, 10 wires in the other).
Locate the pink/blue wire (passenger door lock) and cut it about 1" away from
the Keyless Module. Insulate the end that goes into the module. Now
locate the driver's door lock wire, which is either yellow/green or yellow/white
depending on whether you have the factory security system or not. Make
sure you do not get a plain yellow wire. You need to "T-tap" the free end
of the pink/blue into the driver's lock wire. Once this is done, unlocking
the driver's door with the remote will unlock the passenger lock too, since they
are now tied together.
Want to get fancy?
It would be relatively simple to install a relay behind the passenger dash cover
and wire it to the ROOF switch and run a wire to the Keyless module. The ROOF
switch provides +12v, so if you wire it to activate a relay and then wire the
relay contacts to ground the appropriate wire on the Keyless module you can
unlock the door by pressing the ROOF switch. Cool. No extra switches
to install. Of course the door will unlock any time you use the ROOF
switch to operate the top, but you probably don't care.