I installed a new alpine head unit a couple of weeks ago but have since had no antenna as the cable from the car doesn't fit into the connection on the unit. I'm aware that I need some form of adapter but want to be sure which one is suitable. The pics below show the connection I need.
The connector coming from the alpine head unit:
The antenna cable from the car:
Thanks
The connector coming from the alpine head unit:

The antenna cable from the car:

Thanks