Any car - How to fit a hidden dead/immobiliser switch - Tommk4

I have two older cars, one diesel one petrol and as neither of them have any form of immobiliser I would like to fit a hidden dead switch somewhere in the cockpit. So I have two querstions.

1) How easy would it be to do this?

2) How much do you reckon a garage would charge to do this?

Thanks for reading

Edited by rtj70 on 26/03/2010 at 09:01

Any car - How to fit a hidden dead/immobiliser switch - Peter.N.

Shouldn't be to difficult. The diesel would be the easiest as if it has a purely mechanical pump you can cut the lead to the fuel solonoid on the top of the pump at the back and connect a switch to the two ends.

The petrol one would require a switch in the starter solonoid lead, same principle only you would need fairly thick wire unless you used a relay in the circuit.

The diesel I'm sure you could do quite easily yourself, the petrol one you may need help with. A competent self employed auto electrician would be best, although anyone who has a basic knowlwdge of car elelctrics should be able to do it.

Any car - How to fit a hidden dead/immobiliser switch - WellKnownSid

How old is old? Older petrol cars should be easy to hook an immobiliser to, just by breaking somewhere in the LT circuit.

More modern cars you need to be careful with. I'm in the process of removing the immobiliser fitted to my Mercedes - because it's only 22 years old it has some quite sensitive electronic ignition components. The way it's currently wired into the coil would probably destroy the ignifition module should the immobiliser operate with the engine running.

Any car - How to fit a hidden dead/immobiliser switch - Peter.N.

... that's why I thought it would be safer to immobilise the starter.

Any car - How to fit a hidden dead/immobiliser switch - WellKnownSid

That was a good call.

Of course, I remember the days when you could diagnose everything on a car by just randomly unplugging things until nothing happened. ;)

Any car - How to fit a hidden dead/immobiliser switch - smug bellend #1

You could try putting a switch in the feed to the fuel pump.

Any car - How to fit a hidden dead/immobiliser switch - tacs

I remember my fathers first immobiliser...

The gear lever would pop out on one of his dodgy mk I escorts...

Accidental activation however was always a danger and cause for some amusement... after the fact.

Edited by tacs on 26/03/2010 at 23:44

Any car - How to fit a hidden dead/immobiliser switch - piston power

Most tow rags when the break into your car and crank it over will think it's a old shed and just won't start i used to fit these years ago it saved a neighbours sierra i fitted it to the ignition so no spark, but as said above be carefull so fuel pump solonoid or starter it will crank with fuel pump but not with starter.

I hid the switch in the driver footwell panel next to acclerator use a good strong switch that will not break if you kick it!, plenty of places to hide it.

Cost to you if you do it no more than a fiver, a garage hourly rate plus parts expect about £50-60.00

Any car - How to fit a hidden dead/immobiliser switch - gordonbennet

However it's wired you ideally want the engine to turn over but be unable to fire, the sound of a cold cranking engine not firing should alert someone maybe yourself if the car is nearby, if the scroat is sitting in your car and the engine doesn't turn over he might just sit there quietly searching for such a device for a minute.

My trusty and competent sparky has fitted a similar device to my old Benz, but said don't bother on the newer vehicle, he's of the opinion that unless they have the correct keys a new vehicle isn't going anywhere, he should know.

Why do we only get the idiotic things from the USA like fast food? joints and claimsRus, and not the right to protect and defend oneself and ones own property.

Any car - How to fit a hidden dead/immobiliser switch - piston power

Yes we should be able to shoot theives who steal our cars and burglars like they do in the states.

Any car - How to fit a hidden dead/immobiliser switch - Diamond

However you wire it up you should use a locking key barrel switch.

 

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