Connector system, comprising: a first connector with a first connector body having a connector latch; a second connector with a second connector body configured to mate with the first connector body along a longitudinal axis, comprising a flexible connector lock arm defined by the second connector body and configured to engage the connector latch, thereby securing the second connector body to the first connector body, said flexible connector lock arm having a pressing area near a rear end of the second connector that, when pressed by an operator, causes a catch portion of the flexible connector lock arm to pivot and disengage the connector latch, a pair of side walls projecting upwardly from the second connector body that extend longitudinally, i.e. parallel to the longitudinal axis, on each side of the flexible connector lock arm, and a front wall located forward of the flexible connector lock arm extending laterally, i.e. perpendicularly to the longitudinal axis, and interconnected to forward ends of the side walls; and a connector position assurance device comprising a rear wall extending laterally and a top wall abutting the rear wall, a tongue that engages with the pressing area of the flexible connector lock arm when in a final position, thereby inhibiting movement of the CPA device from the final position, and a flexible CPA lock arm (48, 50) configured to engage the pressing area of the flexible connector lock arm and secure the CPA device to the second connector body, thereby inhibiting disengagement of the CPA device from the flexible connector lock arm, wherein the side walls, front wall, top wall, rear wall and the first connector body cooperate to enclose the pressing area and the flexible CPA lock arm (48, 50) when in the final position, thereby inhibiting access by the operator to the pressing area to prevent disengagement of the catch portion of the flexible connector lock arm from the connector latch and thereby preventing disengagement of the CPA device from the flexible connector lock arm. a first connector with a first connector body having a connector latch; a second connector with a second connector body configured to mate with the first connector body along a longitudinal axis, comprising a flexible connector lock arm defined by the second connector body and configured to engage the connector latch, thereby securing the second connector body to the first connector body, said flexible connector lock arm having a pressing area near a rear end of the second connector that, when pressed by an operator, causes a catch portion of the flexible connector lock arm to pivot and disengage the connector latch, a pair of side walls projecting upwardly from the second connector body that extend longitudinally, i.e. parallel to the longitudinal axis, on each side of the flexible connector lock arm, and a front wall located forward of the flexible connector lock arm extending laterally, i.e. perpendicularly to the longitudinal axis, and interconnected to forward ends of the side walls; and a connector position assurance device comprising a rear wall extending laterally and a top wall abutting the rear wall, a tongue that engages with the pressing area of the flexible connector lock arm when in a final position, thereby inhibiting movement of the CPA device from the final position, and a flexible CPA lock arm (48, 50) configured to engage the pressing area of the flexible connector lock arm and secure the CPA device to the second connector body, thereby inhibiting disengagement of the CPA device from the flexible connector lock arm, wherein the side walls, front wall, top wall, rear wall and the first connector body cooperate to enclose the pressing area and the flexible CPA lock arm (48, 50) when in the final position, thereby inhibiting access by the operator to the pressing area to prevent disengagement of the catch portion of the flexible connector lock arm from the connector latch and thereby preventing disengagement of the CPA device from the flexible connector lock arm.