Extra security
- Thread starter Marlon
- Start date
I'm regretting starting this thread 
From what I remember it involves 2 relays and a button (plus LED if you like to know it's 'armed').
One heavy duty relay is used to break a key connection that allows the car to start - I've not check the wiring diagrams but let's assume the starter to prevent it being jumped.
The other relay activates when you swipe past the reed and deactivates the whole lot when you push the button.
I think the idea is even if they found the switch and bridge it - nothing happens and it would take far too long to find both relays especially if hidden in the engine bay. You put the reed somewhere in easy reach and not obvious and brush past it naturally so even if being watched they can't manage it. The push button can act as a kill switch if you also wire in the first relay (or another) to something like the fuel pump/ECU.
Not massively difficult and probably the most effective deterrent as it can work even if they have keys when done correctly.
One heavy duty relay is used to break a key connection that allows the car to start - I've not check the wiring diagrams but let's assume the starter to prevent it being jumped.
The other relay activates when you swipe past the reed and deactivates the whole lot when you push the button.
I think the idea is even if they found the switch and bridge it - nothing happens and it would take far too long to find both relays especially if hidden in the engine bay. You put the reed somewhere in easy reach and not obvious and brush past it naturally so even if being watched they can't manage it. The push button can act as a kill switch if you also wire in the first relay (or another) to something like the fuel pump/ECU.
Not massively difficult and probably the most effective deterrent as it can work even if they have keys when done correctly.
Kill switches are great- many moons ago as a student I was driving my new to me fiesta back to university in England from Belfast. As I drove onto the ferry the engine died? I assume I'd stalled but couldn't start it again. Got pushed onto ferry and rang a to meet me in Stranraer assuming an easy fix, an hour and a half later of the as scratching his head I was worried I'd bought a lemon. Just as he was giving up and arranging a tow he started to laugh - flipped the hidden switch he had found in the footwell and started the car!
I remember when we bought my sons first car, a classic Mini. We drove it home and then his mates descended and were in it, under it, all over it and oh so many plans and trips were being talked about. So the next day we were going for a spin and, no go!!. I checked the fuel and then found no spark, tried another coil, no go. I went all over the bloody thing and then called the old owner, he said to check the fog light switch, when I looked, I found 2 and someone had switched one off!!
