Wiring up immobiliser

[JimX]

I'm thinking of getting a new 3 point immobiliser alarm because my current one has a stuffed remote and I'm sick of fiddling around with it constantly to get it working. The alarm also does some strange things sometimes, like giving false alarms, so I figure I'll just start fresh with a whole new system.

I'm wondering how hard is it to wire up the immobilisers yourself? Do they all splice into the main loom which goes into the ECU? If so, can someone please tell me which wires are for fuel, starter, and ignition? Also let me know of the best place to splice them, and any issues I might have, particularly with not zapping anything important (and expensive).

[strutto]

Under the steering wheel in the key loom and fuse box would be the best place to find ignition and start...

Most immobilisers have long wires for the immobilisation circuit so you can route the wires away from the alarm itself... This makes it harder for a thief to find the broken circuit...

[JimX]

Why didn't I think of the fuse box? Thanks for that!

[strutto]

You'll be cursing it's very existence the second you try to do any wiring in there... It's tight! I unbolted mine from the dash and gently manoeuvred it so the rear of the fuse panel is accessible if you hang upside down with your right leg under the seat an your left leg between the handbrake and gear shift whilst stuffing your head in-between the accelerator and brake pedals whilst holding a burning soldering iron, solder, a torch, the wire your joining and the wire your attaching to with two hands and your mouth...

[jabtronic]

Have a quick read of this homemade immobiliser setup on AutoSpeed

http://www.autospeed.com/cms/A_0059/articl...?popularArticle