Just noticed this on ebay:
"Tesla Aux-in for Audiophiles - Model X/S - Solution for MCU1, 3.5mm jack"
Tesla Aux-in for Audiophiles - Model X/S - Solution for MCU1, 3.5mm jack | eBay
Now, the $299 price seems a bit high. From the picture it looks like it's simply an extension cable for some MCU connector, with the 3.5mm jack added in between?
"Tesla Aux-in for Audiophiles - Model X/S - Solution for MCU1, 3.5mm jack"
Tesla Aux-in for Audiophiles - Model X/S - Solution for MCU1, 3.5mm jack | eBay
Now, the $299 price seems a bit high. From the picture it looks like it's simply an extension cable for some MCU connector, with the 3.5mm jack added in between?