Backprobing Spring-Loaded Lock Connectors
When checking voltage or resistance on this type of connector the first time, you must remove the retainer to insert the tester probe from the wire side.NOTE: It is not necessary to reinstall the removed retainer; the terminals will stay locked in the connector housing.
To remove the retainer, insert a flat-tip screwdriver between the connector body and the retainer, then carefully pry out the retainer.
NOTE: Take care not to break the connector.