A heated hose assembly comprising: an electrical connector system; a first heated hose configured to transfer a first fluid component; and a second heated hose configured to transfer a second fluid component; wherein the electrical connector system comprises: a first electrical connector comprising a first key; a second electrical connector comprising a second key shaped to mate with the first key; a third electrical connector comprising a third key; and a fourth electrical connector comprising a fourth key shaped to mate with the third key; wherein the first electrical connector is electrically coupled to a heating element of a first segment of the first heated hose; wherein the second electrical connector is electrically coupled to a heating element of a second segment of the first heated hose; wherein the third electrical connector is electrically coupled to a heating element of a first segment of the second heated hose; wherein the fourth electrical connector is electrically coupled to a heating element of a second segment of the second heated hose; wherein an electric current flowing through the first electrical connector and the second electrical connector increases a temperature of the first fluid component transferring through the first heated hose; and wherein an electric current flowing through the third electrical connector and the fourth electrical connector increases a temperature of the second fluid component transferring through the second heated hose; characterized in that a geometry of the first key differs from a geometry of the third key, and wherein a geometry of the second key differs from a geometry of the fourth key. an electrical connector system; a first heated hose configured to transfer a first fluid component; and a second heated hose configured to transfer a second fluid component; wherein the electrical connector system comprises: a first electrical connector comprising a first key; a second electrical connector comprising a second key shaped to mate with the first key; a third electrical connector comprising a third key; and a fourth electrical connector comprising a fourth key shaped to mate with the third key; a first electrical connector comprising a first key; a second electrical connector comprising a second key shaped to mate with the first key; a third electrical connector comprising a third key; and a fourth electrical connector comprising a fourth key shaped to mate with the third key; wherein the first electrical connector is electrically coupled to a heating element of a first segment of the first heated hose; wherein the second electrical connector is electrically coupled to a heating element of a second segment of the first heated hose; wherein the third electrical connector is electrically coupled to a heating element of a first segment of the second heated hose; wherein the fourth electrical connector is electrically coupled to a heating element of a second segment of the second heated hose; wherein an electric current flowing through the first electrical connector and the second electrical connector increases a temperature of the first fluid component transferring through the first heated hose; and wherein an electric current flowing through the third electrical connector and the fourth electrical connector increases a temperature of the second fluid component transferring through the second heated hose; characterized in that a geometry of the first key differs from a geometry of the third key, and wherein a geometry of the second key differs from a geometry of the fourth key.