Whirlwind MCT7 Cable Tester Whirlwind MCT7 Multi Connector Cable Tester - Owner's Manual - Whirlwind 60 Day Warranty Cable tester with diagnostics for virtually all common connectors and cable combinations Dedicated LED's for each connector type Allows testing for Positive Continuity, Cross Wiring, Loose Contact, Open Circuit Leakage and Short testing includes Leakage Between Wires(up to 10 kOhms), Short Between Wires and Short To Ground