An electrical connector system, comprising: a first connector body defining a locking fin; a second connector body configured to receive the first connector body; a flexible locking arm defined by the second connector body configured to releasably engage the locking fin; a plunger slidably attached to the second connector body and moveable from an engaged position in which the plunger holds the locking arm in engagement with the locking fin to a disengaged position in which the plunger disengages the locking arm from the locking fin; and a spring disposed between the plunger and the second connector body and configured to urge the plunger into the engaged position, wherein a push surface on a flexible arm of the plunger contacts a forward end of the first connector body as the first connector body is inserted within the second connector body, thereby compressing the spring and moving the plunger from the engaged position to the disengaged position, wherein the second connector body is configured to bend the flexible arm such that the push surface no longer contacts the forward end of the first connector body as the plunger reaches the disengaged position, thereby allowing the plunger to return from the disengaged position to the engaged position, wherein compression of the spring causes the push surface on the flexible arm of the plunger to exert a force on the forward end of the first connector body when the push surface is in contact with the forward end, thereby urging the first and second connector bodies (104, 110) apart, wherein the plunger defines a first tab having a first angled surface and the locking arm defines a second tab having a second angled surface and wherein the first angled surface contacts the second angled surface as the plunger moves from the engaged position to the disengaged position, thereby lifting an end of the locking arm over the locking fin, wherein the first tab holds the end of the locking arm over the locking fin when the plunger (120 is in the disengaged position, wherein the plunger is configured to lift the locking arm over the locking fin when the plunger is in the disengaged position, wherein the plunger and the second connector body are formed of a polymeric material, characterized in that the electrical connector system further comprises a metallic clip disposed within the second connector body, and wherein the spring is disposed between the plunger and the metallic clip. a first connector body defining a locking fin; a second connector body configured to receive the first connector body; a flexible locking arm defined by the second connector body configured to releasably engage the locking fin; a plunger slidably attached to the second connector body and moveable from an engaged position in which the plunger holds the locking arm in engagement with the locking fin to a disengaged position in which the plunger disengages the locking arm from the locking fin; and a spring disposed between the plunger and the second connector body and configured to urge the plunger into the engaged position, wherein a push surface on a flexible arm of the plunger contacts a forward end of the first connector body as the first connector body is inserted within the second connector body, thereby compressing the spring and moving the plunger from the engaged position to the disengaged position, wherein the second connector body is configured to bend the flexible arm such that the push surface no longer contacts the forward end of the first connector body as the plunger reaches the disengaged position, thereby allowing the plunger to return from the disengaged position to the engaged position, wherein compression of the spring causes the push surface on the flexible arm of the plunger to exert a force on the forward end of the first connector body when the push surface is in contact with the forward end, thereby urging the first and second connector bodies (104, 110) apart, wherein the plunger defines a first tab having a first angled surface and the locking arm defines a second tab having a second angled surface and wherein the first angled surface contacts the second angled surface as the plunger moves from the engaged position to the disengaged position, thereby lifting an end of the locking arm over the locking fin, wherein the first tab holds the end of the locking arm over the locking fin when the plunger (120 is in the disengaged position, wherein the plunger is configured to lift the locking arm over the locking fin when the plunger is in the disengaged position, wherein the plunger and the second connector body are formed of a polymeric material, characterized in that the electrical connector system further comprises a metallic clip disposed within the second connector body, and wherein the spring is disposed between the plunger and the metallic clip.