ignition "on" circuit??
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Joined: Dec 2004
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From: Franklinton, NC
ignition "on" circuit??
I'm hooking up my air system/air horns. (these things are LOUD!)
The instructions say to hook one side of the pressure switch to the ignition on circuit, usually "the blue wire under the dash".
That's a little too general for this country boy.
Is there a place under the hood that can be easily tapped into to run power to the pressure switch only when the ignition is on?
Thanks, CedricR.
The instructions say to hook one side of the pressure switch to the ignition on circuit, usually "the blue wire under the dash".
That's a little too general for this country boy.
Is there a place under the hood that can be easily tapped into to run power to the pressure switch only when the ignition is on?
Thanks, CedricR.
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Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
This isn't under the hood but it should work for you.
7.3L Powerstroke Ignition power source. Arrow is pointing to red wire with yellow trace. This round black plug is attached to the metal dash chassis just above. Use the same ground location used in the previous image (6.0L Powerstroke).
NOTE: There are many different locations where you can obtain your ignition switched 12V source. Depicted above is just one example. Irregardless of where you connect your gauge power and illumination source, we recommend that you check this sources first, before you make your connections. For 12V Ign. switched: Using a voltmeter, ground the black lead from the meter to chassis ground. With the red lead off the meter, probe the 12V Ign. switched source. You should read 12-13VDC when the Ign. key is turned on, and 0V when the key is off.
7.3L Powerstroke Ignition power source. Arrow is pointing to red wire with yellow trace. This round black plug is attached to the metal dash chassis just above. Use the same ground location used in the previous image (6.0L Powerstroke).
NOTE: There are many different locations where you can obtain your ignition switched 12V source. Depicted above is just one example. Irregardless of where you connect your gauge power and illumination source, we recommend that you check this sources first, before you make your connections. For 12V Ign. switched: Using a voltmeter, ground the black lead from the meter to chassis ground. With the red lead off the meter, probe the 12V Ign. switched source. You should read 12-13VDC when the Ign. key is turned on, and 0V when the key is off.
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