I've read that the stock antenna plugs are different sizes. Does anyone have a pic?
I ordered an antenna Y adapter to see if I can plug both antennas into my new T1809 head unit, but I wanted to make sure it will work for both antennas.
They are different sizes, one smaller. I think all you need to do is use the larger and also make sure to connect the power antenna wire otherwise the signal quality is very poor.