Simple tricks I use on other people's car to prevent theft.
fuel pump relay kill switch.. hide the switch somewhere, I won't reveal best places because thieves might be reading here also. :P
Some clever thieves might think about that, but that's where the skills of hiding the wiring will help.
This one is the best IMO because
Engine will turn over, but will not start, so even if he manages make the ignition work, he will waste time starting the car, and if he start 10-15 times, someone ought to notice. I think most thieves will start once or twice, and if fails, he'll leave it.
If someone notices and offers help, at least it would also mean someone saw the thieves face.
easier for edisi siasat :P
Even better if it's those car jackers waiting at petrol stations for suitable victims, sees you leaving key inside, car, then jumping in your car and drive off, but then failed because couldn't start the car :P
If you're the bulky time, then it's time to 'kirim salam' to the fella sitting inside your car.. ha ha. :P
Simple trick I use on my own car.
a) don't park at secluded areas, I'd rather pay more/walk further for parking at a safer spot.
b) don't care about how the car looks, the more multicolour/peeling paint/etc, the better (ha ha)
c) If have to park for long hours at a new place/suspicious place, take out the plug cables, or if you already relocated the main relay like me, remove main relay.
e) don't put expensive things in plain view, even if the thieves doesn't jack your car, those rows
of defi meters still hurt the pocket.
f) removable steering boss (no steering to steal.. ha ha)
I don't think steering lock does anything for security, because the steering wheel circle is the softest spot to saw.. but if you keep steering lock in your car as weapon, that's SECURITY :P
If you know your place is popular, you can also 'kianat' potential thieves, esp if you have an DC/AC converter in your car.
one wire to live, one wire to neutral, connect the wires two needles poking out of the driver seat backrest, and the thief is now a giant 240V switch, when he puts his back on the seat.. unfortunately, it still probably won't be enough to kill a healthy male though :P.
I heard that the actual product of the thing I mentioned above is actually sold.. in some distant country I don't remember.
But just hope that you don't fall into the same trap.. lol.