Electrical Connector with Locking Spring

An electrical connector assembly, comprising:

• a mating connector;
• and
• an electrical connector plugged into and locked onto the mating connector along a plug-in direction in a plugged-in position, the electrical connector including a housing formed in a single piece and having a recess, a compression spring disposed in the recess, and a position assurance element having a head disposed in the recess and inserted through a first end of the compression spring, the compression spring is unloaded in the plugged-in position, the compression spring opposes plugging of the electrical connector into the mating connector in a loaded state of the compression spring, the position assurance element is displaceable in the plug-in direction when the electrical connector is plugged into the mating connector from a delivery position toward the plugged-in position, the first end of the compression spring exerts a force only on the position assurance element, the position assurance element exerts a force on the one-piece housing, a second end of the compression spring opposite the first end along a longitudinal axis of the compression spring exerts a force only on the recess of the housing.