Dear friends
I know that many of you are reluctant to install an alarm system on their loved classic cars, because of the looks, and originality arguments.
I as you can imagine, balance other aspects to sustain my recommendation.
Of course I also would be against it if that modifies in a careless manner the wiring harness…..
But.. these classic cars are so easy to start without a key, that I think “is better to have it correctly installed than having nothing ….. car thieves are there, not only in lawless countries.
So see this job and judge yourself.
The system is fully embedded on the main harness, everything carefully installed. Not even one splice made to the main harness.
Connections for alarm are taken most of them directly at fuse box via a separated terminal screwed on it.
Fuel pump line is replaced for a new one making a lace trough a fuel cut off relay installed on the bracket that holds steering switch terminal and instrument cluster connector.
The relay used is an original cube Mercedes style relay that looks as being part of the car original design.
I produce a jumper for the relay for the possible event of a failure.
As siren, can be used a tiny one as shown here which can be placed under the battery tray at the engine bay, or if you do not want a siren the original car horn can be used instead. That means more work but can be done, since an array of relays should be used together with a honk pulse generator.
This alarm is triggered by vibration, door opening and energy consumption. Optionally can be added a ground switch for hood or trunk to also trigger the alarm because of them.
The alarm status led and programming button are hidden with easy hand access below the steering column.
If the alarm is triggered many times by one of the three sensors in a period of 30 min, that zone /sensor is automatically bypassed so that the neighbors are not disturbed.
If you pass the ignition switch to the on position, and the alarm is active, the fuel reserve indicator will turn on to remember you that fuel is cut off.
So if an alarm is well installed I am not against it.
Best regards
L.Peterssen
