Re: JCWhitney Keyless entry - some reflections

["P-O Selander (EUS)" <EUSPOS@am1.ericsson.se>]

A couple of things to consider when installing a keyless entry:

First, a large antenna and remote that works over great (convenient)
distances also increases the possibility to open YOUR car by someone that
"randomly" is walking around in a parking lot and trying to open cars with a
"bootlegged" transmitter. I'd keep the antenna low so you have to be in
pretty close proximity to car for it to open. Of course, trade off on
security versus convenience. I don't think the JC Whitney unit has
intelligence to send different codes at every time. Please correct me if I'm
wrong.

Secondly, installation of a device that trigger the actuator and
locks/unlocks the doors will NOT trigger the Audi factory alarm. The alarm
is triggered by a micro switch in the lock cylinder assembly and you HAVE to
turn the key for this to work. Anyone who have replaced the broken lock
lever on 89-91 Audi have probably fiddled with aligning this switch properly
prior to re-assembly of lock assembly.
You have to disconnect factory alarm or splice those wires too. But then, an
alarm that is switched off every time someone opens the lock is not very
good either. The way it is set now triggers an alarm if someone opens a
door, even if they manage to get the actuator working. Key is the only thing
that will diconnect alarm (short of pulling fuses, cutting cables etc, etc).

I do not know how later Audis (with remote) have addressed this but the
above should be valid for all 100/200 of 1989-1991.

P-O Selander
89 100E
91 300ZXTT