FM Antenna Connection on Headunit

[snickle]

Does the antenna in the 300/Magnum use a standard FM antenna connection or is it a custom one?

Looking to add an FM Modulator, but have not had time to pull the unit out.

[Earcandy]

There are antenna adapters for this style of plug you should be able to find them at any car stereo store they are made by Metra and this number might be wrong but here goes
44-cr?? you will need two, male and female.
Hope this helps :D