Tower Hobbies has the cords in all three plug configurations you might need. As stated above the new stuff has a small square plug port & the older ones have a bigger round port. They have the cord in round to round, sqare to sqare, & square to round. I know because I had to find the sqare to round cord to get started, as I was using a new Tower radio & an older Futaba. I found it @ Tower for $9.99 I believe. Good luck


Mark