71 Dart A/C car heater issues

Update, now that I plugged the resistor back on and it seems to blow out of every proper vent, It’s not getting hot. It’s warmi(ish) but not very warm to hot. Going to try and swap out my thermostat for a 180* unit. Not sure what’s in it now, but the temp gauge has never risen above about 1/4 since I’ve owned the car. The valve inline with the heater hoses does move to one side or the other when you go from heat to ac.