Flashing LED

[Stujw70]

I am after a flashing LED to fit to the GS. Don't have an alarm fitted but wish to at least have a something visual to deter.

Anybody know if you can get these.

Thanks

Stu

 

[Deleted account 220427002]

http://www.maplin.co.uk/Free_UK_Delivery/Security_Flashing_LED_22905/Security_Flashing_LED_22905.htm

and cheep too

 

[Stujw70]

LED

http://www.maplin.co.uk/Free_UK_Delivery/Security_Flashing_LED_22905/Security_Flashing_LED_22905.htm

and cheep too

Excellent, just what i was after.
I guess this should be ok to fit to the 2 pin cable under the seat? I presume it is the power supply for an alarm anyway.

Thanks for the link

Stu

 

[cookie]

what i do in my car is knock up a small pcb with a reed relay on it. connect to switch & unswitched supply so that when i take the ignition key out, the LED flashes.

always *armed* when left & no false alarms. perfect

ps. it's not worth nicking anyway

 

[Stujw70]

LED

what i do in my car is knock up a small pcb with a reed relay on it. connect to switch & unswitched supply so that when i take the ignition key out, the LED flashes.

always *armed* when left & no false alarms. perfect

ps. it's not worth nicking anyway

Makes sense to have it on when off and visa versa,

But bit beyond me knocking up a pcb, mechanical things yes, electric's scare me.

I presume it would be on all the time without this. But does this really matter as they don't draw much or get hot. Do they?

Stu

 

[pomm001]

i wanted to do a similar thing on my sons car, an auto electrician friend of mine told me to do the following:

wire correct leg ( long one ?) of the LED to a permanent live, connect the other to a 'switched' live, ie live when the ignition is on
When the ignition is switched of the switched side finds enough continuity to ground to light up the LED .

It does work !

dont ask me how, it certainly goes against logic, mine anyway
and if you try it make sure it doesnt interfere with other electronic devices

 

[cookie]

i wanted to do a similar thing on my sons car, an auto electrician friend of mine told me to do the following:

wire correct leg ( long one ?) of the LED to a permanent live, connect the other to a 'switched' live, ie live when the ignition is on
When the ignition is switched of the switched side finds enough continuity to ground to light up the LED .

It does work !

dont ask me how, it certainly goes against logic, mine anyway
and if you try it make sure it doesnt interfere with other electronic devices

that's a clever one, i'm going to try that. much simpler than my method. guess it finds a ground via a lamp filament or something. ECU perhaps?

 

[pomm001]

that's a clever one, i'm going to try that. much simpler than my method. guess it finds a ground via a lamp filament or something. ECU perhaps?

never thought about a bulb, but makes sense , if you have the lED i would suggest trying it out first with 'jumper' wires before you commit yourself.
Let me know how you get on. It does sound too easy to work

 

[<<Mark_C>>]

never thought about a bulb, but makes sense , if you have the lED i would suggest trying it out first with 'jumper' wires before you commit yourself.
Let me know how you get on. It does sound too easy to work

Yep - It works with the Maplin led OK

 

[pomm001]

Yep - It works with the Maplin led OK

Isnt it great when somthing so simple works but your not sure why !

 

[Chris G]

i wanted to do a similar thing on my sons car, an auto electrician friend of mine told me to do the following:

wire correct leg ( long one ?) of the LED to a permanent live, connect the other to a 'switched' live, ie live when the ignition is on
When the ignition is switched of the switched side finds enough continuity to ground to light up the LED .

It does work !

dont ask me how, it certainly goes against logic, mine anyway
and if you try it make sure it doesnt interfere with other electronic devices

I did this version a couple of years ago, it worked okay, but the "ground" connection ended up finding it's way to the hazzrd warning button and made it flash in time with the LED, I left it for a week, but as the bike was still in warranty I ditched it and went the relay route

YMMV

 

[cookie]

that's the problem with that method. you never really know where it's going to earth. every bike may behave differently.

 

[<<Mark_C>>]

Couldn't see any unusual lights on when I tried a "dry run". Do you think it might damage something expensive (ie Ecu) by doing this? Might be better to fit an isolator switch so the LED can be switched off when the bike is securely garaged and just use it when out and about.....

 

[Stujw70]

Flashing Led's

Excellent replies so far re: the Led idea.

Thanks

Stu

 

[shugie]

Couldn't see any unusual lights on when I tried a "dry run". Do you think it might damage something expensive (ie Ecu) by doing this? Might be better to fit an isolator switch so the LED can be switched off when the bike is securely garaged and just use it when out and about.....

Doubt it, as the Led will drop a couple of volts, and the current is small, 20mA ish I think. So the side that is off when the key is out has to find a path to earth, fuel pump would do the job, as one example. Same principle is used in domestic dimmer switches.