QuestionMy 98 mustang the horn will honk for no reason every few minutes or when you shut the door. When you unlock with keyless remote the horn wil honk once. When you lock the car with the keyless it honks 3 times. Do I have a short or is it the factory alarm giving me troubles.
AnswerThere are a couple of ways to look at this issue.
If it's the OEM FACTORY alarm (ie; horn honk, headlights),
then the FACTORY ALARM DISARM WIRE is a dark green/purple |- |driver kick or at the Anti Theft Control Unit
located left rear of trunk behind trim panel.
Once Located, splice into the wire with
a simular guage wire, and put it to
a solid chassis ground. This terminates
the alarm functions entirely.
However, at this point, this car would be exceedingly
easy to steel, so I suggest you get an aftermarket
alarm system to protect it from here on in.
Speaking about that probability,
your 2nd option is...
If this IS an aftermarket alarm we are dealing with,
(parking lights flash, siren and an LED
blinking light in the dash), then try this....
...Put the key in the ignition, and turn forward
all the way just before cranking. Then within
5 seconds, locate, press and hold in the
valet/overide button, usually found under the
dash area to the left of the knee,
(push button, spring loaded)
until the installed LED (the blinking light)
in your dash area goes on solid,
and the siren chirps once.
(Your valet switch might be the toggle
(on/off) type. in this case, key on,
flip switch in opposite direction,
then turn the key off.)
This should reset the alarm, and reset
the grounded relay on the starter wire,
allowing you to start the engine.
At this point, the only thing working would
be the keyless entry from the alarm,
if it came equipped that way.
Just Repeat these steps to place it
back to usable armed mode.
You may get 2 chirps, confirming it,
and the lights may flash twice as well.
That should do it.
If you want to remove it at this point,
take it to your neighborhood installer
for this, or buy the wiring chart
(Go to: www.vehiclewires.com)
for the vehicle, and reverse engineer it wire
by wire, until safely removed.
Let me know what happens.
Robert Martin/CEO-ALARMTEK
DELUXESERVICE.com
