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Hello. My name is ***** ***** I will be helping you today.
If it were me and I wanted to do it I would connect both grounds to each other and run the now common ground into a relay. I would then control the relay with an obscurely located toggle switch somewhere in the cab.
Is this HID or no? Let me know and I will pull up a wiring diagram for you.
The easiest way is directly at the headlight connectors. They each have their own ground.
I would not recommend putting a switch in the control (power circuit)
On the left headlight the grounds are the black/green (theres two of them) and on the right they are the black/green and black/grey. Tie all of those together and either run them through a heavy duty toggle switch or through a relay. The heavy duty toggle would be easiest but the relay would be more "proper".
Thats the only place you can really access a spot to disable JUST the headlights. The A/C, horns, windshield wipers and Im sure other things run off the same ground circuits. You should be able to get to the wiring without removing the fascia and stuff.
Sounds good. Let me know if you need anything further. I will be standing by.
No. They get their power on the same circuit as the low beam headlights. It just commands it differently.
If you have an issue that could be proven to have originated at that splice. That would be tough to prove on anything but a headlight issue since you are only tapped into the ground side.
I dont have the R&R procedure to give to you yet and I havent had to remove one yet so I cant say 100 percent for sure how to remove them and dont want to steer you wrong on it. I can opt out if you like and see if another expert can give you information on the R&R
I do not have a wiring diagram on it.
Can you give me the VIN# ***** the Explorer. I can contact a Ford engineer in Dearborn and see if there is a way to disable or install an on/off switch for the Signature Lights.
I am not sure it is possible to disable the LED signature lighting on the headlights, but I will ask Ford engineer. They have more access to more information than I do as a Ford Service Technician. Those lights come on when the key is turned on and the lights off, and I cannot find in the wiring diagrams. But let me see what they can tell me. I should hear back from them tomorrow around noon if that is ok.
Below are the headlight wiring diagrams and connectors.
Ok. The lights cannot be disabled. There is a wire called the LIN wire which is a wired network for the headlights. They get a signal when the key is turned to on and the signature lights turn on. If you disable this wire, the headlights will not work and will cause other issues in the vehicle which will cause more lighting issues through out the vehicle.