eBay

This is the diagnostic test harness designed by Sven Peterson fully assembled and tested.

You can find the project site for this harness here:

https://github.com/svenpetersen1965/C64-Diagnostic-Rev.-586220-Harness

This kit includes the following:

User Port Dongle
Cassette Dongle
IEC Dongle
Keyboard Dongle
Cables to connect everything to the User Port Dongle (Including Control Port Cables)

The diagnostics cartridge has version 586220+, and is built with a Versa64Cart designed by Bwack. Pictures show it plugged into my EVO64 Blue pearl (not included). Will be carefully packaged for safe shipment.