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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

Ignition feed with engine running only

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Old Aug 9, 2017 | 03:23 AM
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awgiedawgie's Avatar
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Default Ignition feed with engine running only

Thanks for visiting. I searched the forums, but to no avail. I am wondering if there is a wire — preferably under the hood so I don't have to pass through the firewall — that is hot only when the engine is actually running, not simply when the key is on.

I'm hooking up DRLs, and I'd like them on only when the engine is running and the headlights are off.

Code:
Key on/Engine on/Headlights off = DRLs on
Key on/Engine on/Headlights on = DRLs off
Key on/Engine off = DRLs off
Key off = DRLs off
If I can't find such a thing, or if it turns out to be too much of a pain, I'll just use a trigger that's on with the key.

2005 SCrew XLT 5.4L 4x4
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