A thermal system includes a plurality of resistor circuits that define a number of resistor circuits Rn. The thermal system also has a plurality of nodes that connect the plurality of resistor circuits and define a number of nodes Nn. A plurality of power wires are connected to each of the plurality of nodes, and the plurality of power wires define a number of power wires Pn. A plurality of signal wires connect to each of the plurality of nodes to sense the temperature of each of the resistor circuits, and the plurality of signal wires define a number of signal wires Sn. The number of power wires Pn and the number of signal wires Sn is equal to the number of nodes Nn, and the number of resistor circuits Rn is greater than or equal to the number of nodes Nn.