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This is related to a 2016 Ford Fusion Hybrid. I'm looking to install a dashcam (Thinkware F770) which has a parking mode and requires tapping into an always on/hot circuit.

Is there a way to determine which fuse is always hot without using a multimeter? Are there certain fuses that are generally always hot?

My only concern with using a multimeter is that the fuse I find won't always stay hot. It seems that with this particular vehicle, everything turns off after a set period of time, I have not timed this but it's probably between 30-60min. Even with the ignition on, this car will turn itself off after a period of time idling.

2016 Ford Fusion Hybrid Fuse Box

Mr.Z
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The fuse 1 for interior lights / dome light fuse will be hot all the time - it's the electronic control after the fuse ie in the door or body ecu yhat puts the lights on or off as necessary.

However, getting to the wire on the fused side of that fuse might be more challenging.

If you find the wiring diagram then you can identify the colours and then, maybe, find that wire under the dash perhaps going up the A pillar to the dome light.

It may be that the feed to the light above the mirror may be good enough to feed the camera directly - depends on the size of the fuse in the fuse box and the current needed for the camera.

Solar Mike
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What about the 12 volt power supply on the auxiliary power port (cigarette lighter) on some cars there always connected.

RS Humel
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