Peugeot 106 - Wiring to a pre-ignition 12v source

Please can someone help me? I've just installed central locking into my
3dr 1994 106XR. Everything's done except the wiring. I need to wire in
a live and earth. I've found the earth point in my car so I've screwed
that on, however I don't know where to splice the live cable!!! I
looked under the dash and there's about 1,000,000 wires!! I've also
looked in my Haynes manual but I can't make any sense of it. All I want
is a pre-ignition 12v source...the question is, where is it and what
colour is it?

Thanks in advance

Jon

 

big red + on the battery

 

Ha ha thanks Tom! I know that but I can't wire it directly into the
battery!!! Where do I wire it from under the dash? Is it just a case of
trying to follow that big red?

 

any red you can find with code starting BB should be ok

 

Anything that can be powered up without the ignition on, uses a pre-ignition
12v source. So splice off your radio, headlights, whatever - get out your
multimeter and test some wires.

Just bear in mind that if your radio only uses a 10A fuse and 10A wiring,
then it would be a bad idea to splice a 30A (for example) locking-kit off
it's power source.