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alarm flash leds?

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carguy411 
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Joined: April 02, 2002
Location: United States
Posted: April 20, 2007 at 12:58 PM / IP Logged  
im doin an alarm in my friends bike.what i want to do is use the wire that connects to the turn signals that flashes when the alarm is armed and disarmed.
i wantto take that wire and split it so it flases turn signals and also flashes the led accent lighting pods. but still have them work independantly from each other. can i just use 2 diodes to isolate them from each other
thanks
the12volt 
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Joined: March 07, 2002
Location: Louisiana, United States
Posted: April 20, 2007 at 1:02 PM / IP Logged  
You would be better off using relays instead of diodes, but yes, it is possible if the diodes are rated higher than the maximum current draw of the lights.
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carguy411 
Silver - Posts: 683
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Location: United States
Posted: April 20, 2007 at 1:05 PM / IP Logged  
we;; a;; hte lights including the turn signals are leds so they dont draw to much
either way how would i do it
im notto sure ofthe ocnections
thanks
the12volt 
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Joined: March 07, 2002
Location: Louisiana, United States
Posted: April 20, 2007 at 1:15 PM / IP Logged  

With relays...

Relay 1

85 to ground
86 to positive light flash output from alarm
87a Not Used
30 to lights(1)
87 to 12V+

Relay 2

85 to ground
86 to positive light flash output from alarm
87a Not Used
30 to lights(2)
87 to 12V+

If you want to isolate each set of lights from the switch too

Relay 1

85 to ground
86 to positive light flash output from alarm
87a to switch side of lights (1)
30 to lights
87 to 12V+

Relay 2

85 to ground
86 to positive light flash output from alarm
87a to switch side of lights (2)
30 to lights
87 to 12V+

With diodes...

Positive light flash output from alarm to anode side of each diode.

Cathode side from one diode to lights(1)
Cathode side from other diode to lights(2)

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the12volt 
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Joined: March 07, 2002
Location: Louisiana, United States
Posted: April 20, 2007 at 1:26 PM / IP Logged  
BTW, the above assumes that all light leads are positive.
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carguy411 
Silver - Posts: 683
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Location: United States
Posted: April 20, 2007 at 1:35 PM / IP Logged  
what way is better to do
relays or diodes?
thanks
the12volt 
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Joined: March 07, 2002
Location: Louisiana, United States
Posted: April 20, 2007 at 1:38 PM / IP Logged  
I would use relays in this case.
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carguy411 
Silver - Posts: 683
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Posted: April 20, 2007 at 1:52 PM / IP Logged  
ok thanks so just to make sure if i do it like this when the engine leds are turned on it wont turn on the turn signals and viseversa
if the turn signals are engagedte engin leds will no flash or turn on if they are not wanted?
thank again
the12volt 
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Administrator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.spacespace
Joined: March 07, 2002
Location: Louisiana, United States
Posted: April 20, 2007 at 1:55 PM / IP Logged  
Correct, the relays will isolate each set of lights from each other and each respective set of lights will only come on when you turn each on or when there is 12V+ coming from the alarm light flash output.
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carguy411 
Silver - Posts: 683
Silver spacespace
Joined: April 02, 2002
Location: United States
Posted: April 20, 2007 at 2:04 PM / IP Logged  
ok great thank you for all your help
im going to try it this week
thanks again
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