Anyone know what this little black box is?

[Danarch]

I agree it's aftermarket, but I don't see what you mean about the sticker...

If you look in the picture where I took apart the dash and circled the box, you can see in the background a stick that says 2011 JK LH Floor duct. Mr MacGuyver had good eyes. Now I am wondering why that is there.

Thank you for the suggestion. Tracing down wires makes me nervous and frying the entire thing, or something else just not working. It seems tied into something else. I thought about unplugging the harness from the box unit as it looks like they should come out. But afraid of something not working. I hate electrical issues, always have.

 

[15' JK 4 Me]

The violet wire in the door harness is the interior light trigger when you open the door.

 

[15' JK 4 Me]

When that violet wire goes to ground (which happens with the door switch) the intreior lights are activated on a timer circuit.

 

[mrjp]

Sounds like a aftermarket alarm. The min max could be a volume setting

 

[15' JK 4 Me]

That violet wire is a ground wire BUT, is only at ground potential with the door open, Have you tried pushining the button with the drivers door open?

 

[Microsup]

Could it be garage door opener attached to some voltage to not mess with battery, and it only works when door is open. Just a thought.

 

[Danarch]

That violet wire is a ground wire BUT, is only at ground potential with the door open, Have you tried pushining the button with the drivers door open?

I pushed the button, just can’t recall if done with door open or closed. That said based on a post earlier in this thread and the diagram seemed like the violet wire is power mirror motor wire.

 

[Danarch]

Could it be garage door opener attached to some voltage to not mess with battery, and it only works when door is open. Just a thought.

Well this could be an option. Might start googling garage door openers.

 

[Hooperdog]

the sticker on the part in your picture reads "2011 JK LH Floor Duct" that's where he saw it I bet.

 

[Danarch]

the sticker on the part in your picture reads "2011 JK LH Floor Duct" that's where he saw it I bet.

Yup

 

[JerryD]

If you really want to know what it is, open it up, get the FCC ID number and enter it here. That should give you more info.

 

[Danarch]

If you really want to know what it is, open it up, get the FCC ID number and enter it here. That should give you more info.

Thank you, I may just try that out assuming I can get it apart without breaking it.

 

[15' JK 4 Me]

I pushed the button, just can’t recall if done with door open or closed. That said based on a post earlier in this thread and the diagram seemed like the violet wire is power mirror motor wire.

The connector shown in a previous post is NOT the connector your wire is connected to. It is a connector on the inside of the door. The drivers door interior light control is the violet wire in the connector that comes off the door. The connector you unplug when you take the doors off. Drivers side is violet. The passenger side is violet with a white stripe and on the 4 doors they are violet with yellow stripe and violet with grey stripe. In every case these violet wires go to ground when the door is opened. Trust me I know this for a fact.

 

[15' JK 4 Me]

Google the door connector.

 

[15' JK 4 Me]

Did you figure out what it does?

 

[Danarch]

I haven’t figured it out yet. Too be honest haven’t had the time. Did a few other things on her Jeep, one assembly an door rack. The wire has been disconnect from the door harness for over a week and no issues. We removed the doors Saturday so the harness is completly disconnected, no issues. I do plan on removing the panel and unscrewing the metal plate again and seeing if I can determine any model information, FCC number etc. and run it through the FCC site JerryD has posted. I’ll update the post when I do it. Doubt it will be this weekend.

 

[Amok]

I found this online using Google view:

Never Buy a Car Alarm From a Dealership

The alarm that many buy in the F&I office is nothing more than a dealer profit device.

www.thetruthaboutcars.com

 

[Danarch]

I found this online using Google view:

Never Buy a Car Alarm From a Dealership

The alarm that many buy in the F&I office is nothing more than a dealer profit device.

www.thetruthaboutcars.com

That is amazing! I tried google view, but it came up empty! Maybe I didn’t do it right. So that is basically exactly what I have. So question is do I trace down the wires and snip them all back together or leave it? Seems like there are a lot of wires coming out the back of it for an alarm. Thank you very much!

 

[Amok]

That is amazing! I tried google view, but it came up empty! Maybe I didn’t do it right. So that is basically exactly what I have. So question is do I trace down the wires and snip them all back together or leave it? Seems like there are a lot of wires coming out the back of it for an alarm. Thank you very much!

If the door alarm works like it should and there's no other adverse effects I would just leave it.

 

[Danarch]

If the door alarm works like it should and there's no other adverse effects I would just leave it.

Everything seems to work fine when I disconnected the tap wire from the door harness. Guess my concern is if it acts up may cause the Jeep to not start. Flip side I mess it up during removal it may not start. I’ve done a little checking pretty much seems splicing all the wires back together and some of them from the unit to complete the circuit.