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Using a Relay


oldjohnny

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Ok, so I'm in the process of installing a pair of 55 watt fog lamps. I was going to tap into the parking lights, but there are three wires coming out of the parking lights bulb. Obviously, one is a ground, the other is parking, and the last one is hazard/flasher. Which one is the parking light (constant on)? Above all, could I tap in through there for the relay?

Also, let's just say I were to change my mind and instead tap into the 12V Cig lighter, would I still be able to use it to charge my phone and or iPod? I know they are not designed to charge laptops and electronics, but if I tap into the 12V for the relay, could I still use it for regular electronics?
 


_Kyle_

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Can't help you with the specific wires, but you can run a hot for the lights then use the parking light power to activate the relay - then again, do you always want the lights on with the parking lights? An additional switch might be the way to do.

 
RobbieD

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oldjohnny said:
Which one is the parking light (constant on)?
Click to expand...
The Brown wire is parking lights (+).

oldjohnny said:
Above all, could I tap in through there for the relay?
Click to expand...
Yes.

oldjohnny said:
Also, let's just say I were to change my mind and instead tap into the 12V Cig lighter, would I still be able to use it to charge my phone and or iPod?
Click to expand...
Yes.

oldjohnny said:
I know they are not designed to charge laptops and electronics, but if I tap into the 12V for the relay, could I still use it for regular electronics?
Click to expand...
Yes.
 

oldjohnny

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Thanks for the responses.

I will still be using a switch. I will be using the factory one and as we all know, unlike most switches, this switch is run through the negative side. All I need is something to trigger the relay (in this case, the parking lights)

Here's another question. For the 86 side of the relay, if I want them to turn on at any time, can I just plug a wire directly from the battery and into the 86? If yes, does it have to have a fuse? If so, how what type? 5 amps? 20 amps?
 

oldjohnny

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Also, I forgot to mention, but my relay makes a clicking sound when I turn it off and when I turn it off. What does that mean? Is that normal operation?
 
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The clicking noise is the electromagnet in the relay opening and closing.



And you can trigger the relay using the ground side, you would just have to switch the 86 and 85 terminals. 85 would go to your switch (ground) and 86 would go to a 12v source.
 
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