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Does anyone know what this is

Spyshot

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Does anyone know what this is I found it in the trunk of my 2016 ford mustang

IMG_1548.webp
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Skye

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I'm afraid I'm stating the obvious: it's not from the factory.

If there are no identifying marks on that one bit, I'd begin tracing some of the wires out.

My initial thought is it might be a wireless receiver (the black box) or wired controller, connected to other remote devices (multiple wires).

A secondary thought is an electrical bridge of some type.

Do you know if the car had an aftermarket stereo before, specialized lighting or had been bagged? Spit-balling.
 
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Spyshot

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Here is another photo. Besides having a power lead that comes from the engine compartment, it has one wire going to this in-line splice, gizmo hooked into each tail light. I thought maybe it had something to do with sequential tail lights, but when they are unplugged, I still have sequential tail lights. Isn’t that a factory thing anyway?

IMG_1550.jpeg
 
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Spyshot

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OK, here’s another photo. What in the world could this be before? You don’t tow with a mustang.

IMG_1551.webp
 

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Skye

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One dealer add-on often involves specialized brake lights, a rapidly-flashing light. But the examples I've seen, they involve the roof brake light only. And the wiring is not near as involved.

They might have tapped the under hood fuse panel for a device needing power. I can see that. But why that would also involve the tail lights, IDK. With the under hood connection providing power, maybe they tied the device/s into the tail lamps, using them as a type of trigger (or as specialized lighting).

Edit,

Yes, I never considered that. I mean, how many people tow anything with a Mustang? Very few. Maybe not a full trailer, but something big enough to carry motorcycles, jet skis, or a small, homemade trailer.
 
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MAGS1

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There are small trailers that some folks here have used for hauling track wheels/tires to track events. Could be wiring for something like that?
 

JetGray_Mach1

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Is there a serial code or anything on the controller? I would google search anything on it to get an idea.
 

JetGray_Mach1

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1717012837453-ce.webp


This guys towing in style with a M1:sunglasses:
 

MAGS1

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PoCoBob

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The gizmo in your first picture, is there a wire going directly to your battery? If there is then I know what that thing is. The computer in todays cars are so sensitive they will throw a code if they detect an overload on the light circuit, like what happens when you plug in a trailer. So what you do is install a module that plugs into your tail lights and those monitor what the lights are doing and then the module duplicates the same function for the trailer, but all the power comes directly from the cars battery, not the tail light. I have one on my SUV.
 

Hoofer

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Look for non-factory holes drilled, or a bracket, on the rear underside of the car.
 
 








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