Electrical connector, in particular a squib connector for a safety restraint system of a motor vehicle, which can be coupled to a mating electrical connector in a coupling direction comprising: a locking spring "U"-shaped or horseshoes-shaped, and comprising a transverse rod from each end of which extends a lateral rod (10127, 10128) which terminates with turns (10126, 10130) and with a tab (10131,10132), the locking spring which is relaxed in a delivery state, is configured to act counter to a coupling of the connector to the mating connector in a loaded state of the spring; and a first position assurance element of the connector, comprising a head configured so that the head is always in contact with the spring, in particular the transverse rod, configured such that the first position assurance element of the connector can be moved in the coupling direction (10300, 10301) when the connector is coupled to the mating connector from a delivery position to the delivery state and such that the head of the first position assurance element applies a pressure to the transverse rod of the spring, loading it relative to the delivery state as long as the connector and the mating connector are not correctly coupled, wherein the electrical connector further comprises a second "H"-shaped position assurance element of the connector comprising blocking holes (10153, 10154), configured such that the tabs (10131, 10132) of the locking spring can be received in the blocking holes (10153, 10154) of the second position assurance element of the connector, such that the second position assurance element of the connector can be moved by a loading of the spring from a delivery position to the delivery state in a direction which is different from the coupling direction (10300, 10301). a locking spring "U"-shaped or horseshoes-shaped, and comprising a transverse rod from each end of which extends a lateral rod (10127, 10128) which terminates with turns (10126, 10130) and with a tab (10131,10132), the locking spring which is relaxed in a delivery state, is configured to act counter to a coupling of the connector to the mating connector in a loaded state of the spring; and a first position assurance element of the connector, comprising a head configured so that the head is always in contact with the spring, in particular the transverse rod, configured such that the first position assurance element of the connector can be moved in the coupling direction (10300, 10301) when the connector is coupled to the mating connector from a delivery position to the delivery state and such that the head of the first position assurance element applies a pressure to the transverse rod of the spring, loading it relative to the delivery state as long as the connector and the mating connector are not correctly coupled, wherein the electrical connector further comprises a second "H"-shaped position assurance element of the connector comprising blocking holes (10153, 10154), configured such that the tabs (10131, 10132) of the locking spring can be received in the blocking holes (10153, 10154) of the second position assurance element of the connector, such that the second position assurance element of the connector can be moved by a loading of the spring from a delivery position to the delivery state in a direction which is different from the coupling direction (10300, 10301).