Commodore 64 / 128 Diagnostic Harness 

  • This is a full test harness for your C64/C128 and it works on PAL&NTSC computers.
  • New design for easy holding 
  • Superior quality materials : resistors 1% ,Capacitor AVX, industrial pcb gold plated, edge connector real brand new..
  • Only Harness included . For complete test loop you have to connect also "diagnostic test cartridge".Check out my other listings if you don't have your own (check below here)


  1. Diag. with Cartridge -->  https://www.ebay.it/itm/265124993453

  1. Diag. with Cartridge + C128 keyboard dongle --> https://www.ebay.it/itm/265124997158


What's in the box?

  • Keyboard dongle for C64 
  • Serial Port dongle 
  • User port dongle 
  • Tape Port dongle 
  • Joystick port control dongle 


Extra info:

  • For C128  keyboard dongle check the other listing in my Store
  • Color of the cable/connector may vary based on availability


Check my sales history before Ebay listing crash (picture)