My 240D has the connector also, and I was think about trying to use it. I seem to remember mine as connecting to and using the radio antenna instead of seperate antenna. I olny looked at the once and it was just a quick look, so I can't be positive.

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'10 Chrysler T&C Stow-N-Go White. Grandpa's ride.

'13 Chrysler 200 Touring Candy Red. Grandma's ride.

Age and cunning will always over come youth and vigor.