Rich H
Member
Registered: 26th Oct 05
Location: West Sussex Drives: E46 M3
User status: Offline
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Right, I've got a little flashing LED which I want to mount in my MFD dome, basically as a visual deterrent to possible gits who want to break into my car
Thing is, is there actually a power supply that I can run it off of, I have qutie specific requirements!! :
The LED must only operate when the car is turned off and work without the keys in the ignition!!
Was thinking there must be something in the car that has this feature that I can tap into and wire the LED off of? Will need literally a tiny amount of power to make the LED work.
Any help would be appreciated 
Ta
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andyc1234
Member
Registered: 7th Nov 06
Location: Lancashire
User status: Offline
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in th haynes max power manual theres something about a connection on the central locking loom thats only live when the cars locked. ill try n dig it out
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Rich H
Member
Registered: 26th Oct 05
Location: West Sussex Drives: E46 M3
User status: Offline
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Cheers mate. If you could that would be great. Cheers
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RobHayes
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Registered: 6th Sep 03
Location: Lincolnshire
User status: Offline
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wire the + of the LED to a permanent 12v feed, and the - to an ignition only 12v feed.
when the ignition is on, the LED wont work, but when it's off (keys out) the LED will flash as the ignition live becomes earth
thats how i wired mine up
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andyc1234
Member
Registered: 7th Nov 06
Location: Lancashire
User status: Offline
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ye just read my haynes thats what it said they just got theres from the door loom as it was for led door pins.
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Rich H
Member
Registered: 26th Oct 05
Location: West Sussex Drives: E46 M3
User status: Offline
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quote:
Originally posted by RobHayes
wire the + of the LED to a permanent 12v feed, and the - to an ignition only 12v feed.
when the ignition is on, the LED wont work, but when it's off (keys out) the LED will flash as the ignition live becomes earth
thats how i wired mine up
Ok cool, any ideas on relevant wires? And the colours of them?  Once I know this, I'll be sorted 
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andyc1234
Member
Registered: 7th Nov 06
Location: Lancashire
User status: Offline
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there will be a permanent and ignition live under the mfd u need to get ur hands on a multimeter and have a poke around a few wires or get a bulb and try it that way
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