For Yaesu Mic Wiring see: Yaesu Mic Wiring page.
Some Yaesu transceivers can use a cloning cable to copy the memory settings etc from one set to another. Look below and see if yours is listed (if it's not and you have the handbook that tells you about the cloning feature, let me know so I can add it).
All information is from radio handbooks that show the connections, please don't complain if it doesn't work as I have not personally tested them.
All socket views are looking at the radio.
See: Yeasu CT-27A page for for this cable.
Plug is 2.5mm stereo jack type using the Mic socket. Connect ring to ring and sleeve to sleeve (tip to tip as well would be OK).
Also fits some Alinco radios.
Plug is 6 pin modular type (using the Mic socket). Connect pin 3 to pin 3 and pin 5 to pin 5.
Plug is 8 pin mini din type.
On FT-817 use ACC socket.
On FT-857 & FT-897 use CAT/LINEAR socket.
Plug is 9 pin D type (PC serial). The manual says to use a null modem cable but most of the pins are not connected in the radio.
Plug is 6 pin modular type (using the Mic socket). Connect pin 1 to pin 1 and pin 3 to pin 3.
Plug is 8 pin modular type (using the Mic socket). Connect pin 4 to pin 4 and pin 6 to pin 6.
Plug is 6 pin mini din type using the DATA socket.