WireBasics, a Continuity Tester, Cable Tester, and Wire The WireBasics CT-16 Cable Tester / Continuity Tester Perfect for testing cables of all kinds and wire harness assemblies. The green adapters you see in the photo above are connected to the tester via the gray ribbon cables provided with the kit.Manual · Contact · Shop Online · FAQ Page · About · Info Cable Wiring / Harness Tester Archives cable harness wire Cable Wire Wiring Harness Continuity Tester for small Harnesses. Tiny Tester HTMT32 HTMT64. Basic Tester with learn and test facility. Cost effective, reliable and long lasting solution for small harnesses. Fit and forget type. Complete Harness Test System with test fixtures and Harness Test Boards can also be supplied by Futura.