Commodore VIC 20 Diagnostic Test Harness VIC-20 VC-20
For the Commodore VIC 20 - VC 20, Diagnostic Test Harness. 1x VIC 20 Diagnostic Test Harness Only. The test harness should only be used with compatibleVIC 20 diagnostic software. 9V-AC, 5V-DC test points and indicator LED's.