[Oeva-list] Wiring to ignition

[Ron Jayasuriya]

Depends on where you want to use it, and the vehicle in question.
Under the hood?
Examples of wires that will have 12V in run position:
Ignition relay (if applicable)
Fuel injectors, Ignition coil (or coil packs), A/C relay, cooling fan switch, many others.
Since these components will no longer be used you can use them to run something else.
Depending on what you're running, other issues such as wire guage and fuse size (stock and whatever you might add) are worth considering).
You can use a voltmeter to find a wire that is hot with key on.

If you only need one hot wire the above will work.
However, chances are you'll need more than one, in which case you can use the one wire you've found to power a standard automotive relay that will then take power directly from the battery to a terminal block (with fuses) of some kind and run all of your ignition wiring off that.

For something in the rear of the vehicle, you should have 12 volts to the electric fuel pump (most vehicles after say 1990), which is usually in the gas tank or somewhere nearby.

For power inside the vehicle itself, you can locate the fuse block, and then use one of the wires for the components listed above.

Hope that helps.
Maybe someone else has a simpler explanation.

Ron

--- On Fri, 6/5/09, Norris-York, William <william.norris-york at intel.com> wrote:

From: Norris-York, William <william.norris-york at intel.com>
Subject: [Oeva-list] Wiring to ignition
To: "oeva-list at oeva.org" <oeva-list at oeva.org>
Date: Friday, June 5, 2009, 12:15 AM




 
 






What is the best (and easiest) way to wire something to the ignition
“run”?  I am looking to get 12v when I turn the key to “run”
or “on”, but I don’t know where the best place is to find
that. 

   

Thanks, 

Bill 



 


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