What is this???

[gofast63]

Found in a eclipse i bought

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[DirtyWaterDSM]

Idk man almost looks unrelated to the car, that box looks like an ancient Ethernet port

 

[Spooled420a]

Looks like a power bass module for a aftermarket amplifier.

 

[Josue Gomez]

I agree looks like a bass knob

 

[1990TSIAWDTALON]

Yep subwoofer gain remote.

 

[gofast63]

Oh okay cool. Could i even use this or does it suppose to connect to another borad?

 

[JKart]

I agree it looks like a Ethernet port could be from a power amp or piggy back.

 

[Juanjo07]

Looks like a power bass module for a aftermarket amplifier.

Yep, that use a telephone cable to connect to the amplifier

 

[91-GS]

Could i even use this or does it suppose to connect to another borad?

As long as your audio amp has a phone-style remote plug don't see why you can not use this one. Do put it in an enclosure though.