how to make an immobilizer

[Diesel Turbo]

With the amount of thefts for these Surfs. I would like to install a second key switch to prevent starting, can anyone let me know the best wires or way to do this in cab, but I would really like not to have to go under the bonnet each time to start it ie:pulling main fuse lol, many thanks guys

[marcdtr]

You can cut your live+ on the ignition run it to your hidden key switch then back again or off the coil/starter motor.

[Diesel Turbo]

thanks

would you happen to know what colour that wire is please?

[marcdtr]

sorry no only had my surf 5 days lol but if you put a meter on it it will be a perm 12v

[BUSHWHACKER]

That wire is too thick to put on a switch.
In the multi-plug under the steering column, there's a thin black wire with silver dots on it, this is the start signal wire. If you put a switch in there you can de-activate the starter.

[marcdtr]

i was thinking one of these:
http://cgi.ebay.co.uk/UK-Car-Battery...item2eb18312f7

[Diesel Turbo]

Thanks

I think the cutout is good if you get in trouble but for security I think the plug under dash one sounds best. I did not even know I had a plug there! will look tomorrow. Hope I have it!

[coolsv650]

i was thinking one of these:
http://cgi.ebay.co.uk/UK-Car-Battery...item2eb18312f7

I had one of them on a mini years go, mounted the switch on the front grille so I could turn the key on & off, then took the main battery feed to one side and the other off to the solenoid, that was before the days of radio's with memory etc.

It could be done but the electric system on the surf is dfferant, all the feeds for the electrics are taken from the off-side battery (assuming you have 2 batteries) and only the heavy duty start cable goes directly to the solenoid. You could fit one of them switches between the battery and feed cables and put a link in with a low current fuse to keep the clock/radio/central locking live but would blow if trying to draw major current like the glow plugs.

It would take some playing about with to achieve.
What about a thatchem approved immobiliser?

[BUSHWHACKER]

It would take some playing about with to achieve.

Exactly, see post #5.