blower motor resistor to thermostat switch, with 1st design thermostat switch (wires attach to switch,... see moreblower motor resistor to thermostat switch, with 1st design thermostat switch (wires attach to switch, outside of the switch cover), without compressor relay
air conditioning compressor relay, with 2nd design thermostat switch (wires attach to switch, inside of... see moreair conditioning compressor relay, with 2nd design thermostat switch (wires attach to switch, inside of the switch cover) & compressor relay