Where is the alarm brain for a 1997 mustang?

Answer 1

If your vehicle came from the factory with a keyless entry (PATS) system, the "brain" is located in the trunk, drivers side, behind the carpeting on the side of the rear -left quarter panel. Just pop the trunk and pull the carpeting and you'll find it mid way in the trunk mounted on the inside of the quarter panel. However, if you opted to add an alarm at the dealership and it wasn't installed at the factory., it would technically be considered aftermarket. The brain for this is located under, and tucked inside the dash partially, beneath the steering wheel. The best way to view it is to try to lay on your back on the drivers side floor and look upwards under the dash, behind the steering wheel. It will be a black box with a couple of harnesses coming out of it. It will have the Ford logo printed on it. You can tell whether you have a factory or dealer installed after-market system by taking note of whether or not:

Your car has a siren. (It looks like a bullhorn or megaphone and is mounted in the engine compartment).

Your car has a red blinking light that looks like it was added, somewhere in the dash or is visible indicating armed vehicle.

If the two above items are preset, you have an after market system.

If your headlights flash and your horn sounds off during an alarm trigger, you have a factory alarm setup. Hope this helps.