Tried this in the audio section with no success. MAybe I'll get more help in this section.

How would I rig an aftermarket head unit to work with the stock internal antenna on my FD instead of the external?

Thanks for any help

 

I took the stock CD player and cut the antenna harnesses to make an adapter. You can go to an audio shop or Radio Shack. Basically you need to go standard male to mini male.

 

thanks, I didn't know it was a standardized plug.