A connector system including a first connector having a longitudinally extending lock arm defining a lock nib and attached to the first connector. The lock nib is configured to engage a primary lock tab of a second connector when the first and second connectors are in a fully mated position and the lock arm is in a resting position. The lock nib is configured to disengage the primary lock tab and engage a secondary lock tab of the second connector when the lock arm is moved from a resting to an activated position and the first and second connectors are moved to a partially mated position while the lock arm is in the activated position. The connector system generates an audible or tactile click only when the first connector is fully mated with the second connector. The connectors can be disconnected with bare hands, no tools are required.