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What turns on when the car turns off?

For all things Electrical.

Moderator: -Scott-

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What turns on when the car turns off?

Post by chimpboy »

I have to replace the key-switch in the stag, as the original is a bit stuffed. The replacement comes from a different car and has an additional terminal, which gets 12V when the ignition is turned OFF, but which doesn't have power when the ignition or accessories etc are on. Since I am doing a fair bit of rewiring anyway, I was trying to think of any vaguely useful job this terminal could do.

Any thoughts? I really can't think of anything.
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Post by Dooley »

Maybe like a window closer, electric aerial....

Dunno, do you know what the terminal was originally used for ?
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Post by Leeroy »

Yeah a cheap flashing LED if you don't already have an alarm/immobilizer, it can at least LOOK like it does!
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Post by chimpboy »

Dooley wrote:Maybe like a window closer, electric aerial....

Dunno, do you know what the terminal was originally used for ?
No idea, it is just a terminal on the switch that has no wire on it, while all the others have a wire soldered to them. So I guess it might have been unused. Although it is strange that it exists at all.

Odd!
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Post by -Scott- »

Alarm?
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Post by chimpboy »

I like the flashing LED idea.

Alarms I think usually sense the ignition being off, so...

The funny thing is that the key switch thing is from a 1972 triumph saloon, so it can't possibly have been for an alarm or whatever.

Maybe I will wire it to a flashing LED, since it's there. I can't be bothered with real alarms any more, I don't think they achieve much except to cause hassles when they malfunction!
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Post by bunder_ute »

hey...
it may be similar to an old school switch.
off is the click before that...
that terminal is like accessories
so it goes
1: accessories
2: off
3: ignition
4: start

just a quick question.....what did the switch come out of?
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Post by macca81 »

bunder_ute wrote: just a quick question.....what did the switch come out of?
chimpboy wrote:the key switch thing is from a 1972 triumph saloon
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Post by bunder_ute »

the age is about right.......
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