Alrighty, I am really not using my heater/air conditioning, this might be a stupid question, but I noticed that there is a coolant line going towards the inside of the car? Is this correct? I see the line come off the engine block and to the firewall... I am assuming this goes to the heater core, but my question is is there a way to disconnect that if I have to? I mean I am pulling the entire A/C unit and I don't know if there is going to be a fluid line running through the interior of my car when it is removed for the heater. I disconnected all the cables and removed 99% of the ac except for an air duct under the dash (that's another post in non-tech) but if this line runs in the car is there a way to remove it from the interior of the car or plug it off without killing the circulation, or is it only activated when the a/c is activated??