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About LinkBacksMy old Varadero 125 had a dummy alarm light that only came on when the key was out of the bike. Once the ignition was on it went off.
How was this achieved?
Hmmm this might want moving to bike tech...
Senior Member
My old Varadero 125 had a dummy alarm light that only came on when the key was out of the bike. Once the ignition was on it went off.
How was this achieved?
Hmmm this might want moving to bike tech...
Last edited by chronyx; 26-11-07 at 11:31 AM. Reason: Moving
U-Boot Kapitain
I bet you had a real tiny inziwinzi little man with a torch in your fairing somewhere
They call him "Ze Quiet one"
I listen to what the rice crispies tell me to do
Senior Member
He bought a KTM Adventure and escaped.Originally Posted by Lord Vader
I bet you had a real tiny inziwinzi little man with a torch in your fairing somewhere
The Dark One
Easy, get a 5 pin relay(SPDT), wire the coil side to your ignition circuit so that the relay fires when the ignition is turned on. Then on the Normally closed (NC) side wire a 12v flashing led from battery (always live through the NC, then through the LED and to earth.
when the ignition is turned on the relay fires and disconnects the LED, when power is removed it turns it back on.
You could get a purely electronic circuit to do the same, but that would involve transisitors and a little board making up.
Kymmy
Last edited by Lumiya; 26-11-07 at 12:55 PM.
The Dark One
Follow up
Pin number and where they go
Pin 86 = 12v ignition side
Pin 85 = Earth and LED negative (or put the LED negative to some other earth)
Pin 30 = Battery 12v (Perhaps via a fuse????)
Pin 87a = LED positive
Pin 87 no connection
Kymmy
Last edited by Lumiya; 26-11-07 at 12:54 PM.
Senior Member
Nice one thanks Kymmy - I've made little PCB's before so if it's not an essay to type out could you describe how to make an electronic version?
Kymmy accepts no responsibility for this blondes conduct on or off the forum!!
ooo why do sparks do things the hard way!!
find an ignition fed 4 pin relay on the bike, swap the relay carrier and relay to a 5 pin... connect the extra pin (dats 87a) to the LED + and the neg on the LED to the relay earth (pin 86), job done.
The Dark One
I can describe it easy, but no idea which components would be the best without prototyping it!!!!Nice one thanks Kymmy - I've made little PCB's before so if it's not an essay to type out could you describe how to make an electronic version?
But for an electronics version the LED would be switched by a simple transistor that would detect the the ignition voltage. A resistor would be needed not only to pull down the transistor input but also to current limit it.
So really simple to draw, only 4 components, but depending on voltages, current draw of LED, type or transistor (NPN/PNP) depends on what values the resistors are and whether you're switching the positiveor the earth side of the LED.
Kymmy
Last edited by Lumiya; 26-11-07 at 01:33 PM.
Senior Member
Re: Making a circuit live only when ignition is off
Cheers gals!
U-Boot Kapitain
Oh i got itHe bought a KTM Adventure and escaped.
They call him "Ze Quiet one"
I listen to what the rice crispies tell me to do
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