Hi Dave,

If by "discharge cord" you are talking about the DSC/charge adaper for the 9Z FUTM4243, this item is not for the 9Z transmitter, but for the receiver that you are using. It mounts to the side of the fuse of your plane, and allows you to charge and use the DSC (DSC capable receiver only) control to set your plane up.

If you are talking about the Battery Discharge connector, HSP78050, you can use this to charge and discharge your battery from your 9Z but you must still remove the battery from the transmitter.

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Also you may want to check our Website at (http://www.futaba-rc.com)