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LED when the pump turns on
This is a discussion on "LED when the pump turns on" within the Off-Topic Discussion forums. This forum, and the thread "LED when the pump turns on "are both part of the General Performance category;
Devilsown Methanol Alcohol Water Injection
> General Performance
> Off-Topic Discussion 
LED when the pump turns on
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06-17-2007
| #1 (permalink) |
| Water Injection Year: 1994 Make: Eagle Model: Talon Join Date: Apr 2007
Posts: 15
|  LED when the pump turns on
Ive read a recent thread on this and I just didn't have a clue. But, what I'm trying to do is tap into an alarm LED so when the pump turns on, the LED sharing with the alarm will let me know when the pump is working. Can this be done? if so can you please explain how to so this. I tried tapping the main power wire from the pump to one of the alarm LED wire and the LED is just constantly on. thank you |
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06-17-2007
| #2 (permalink) |
| DevilsOwn Staff  Join Date: Apr 2005
Posts: 2,058
| Re: LED when the pump turns on
To wire a led inline the LED needs needs to be connected to the ground and to the pumps red power wire, When the pump gets power it gets power and light up.
__________________ Currently deployed to Ramadi 1 battalion 12th Marines Task Force MP  |
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06-21-2007
| #4 (permalink) |
| DevilsOwn Staff Year: 2000 Make: Pontiac Model: Grand Prix  Join Date: Apr 2005
Posts: 1,124
  | Re: LED when the pump turns on
Yes, it can be done. You will need a 220 ohm resiter, and 2 blocking diodes. All can be bought at radio shack. Just wire the diode and rester inline with the leg from the alcohol kit. Then cut the orginal wire to the led and put the last diode there. This will keep the 2 power sources from feeding back.
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