passenger side draft on e/c

[fireball]

I've noticed quite a draft coming from the passenger side of the cab down towards the floor.At times it seems like there's a hole in the firewall but I've checked everywhere possible and cant find anything.I don't know if the door seal is crushed too much to seal tightly or I'm missing something.Can someone recomend somewhere to look for a possible fix?Anyone that sits on the passenger side suffers from cold feet and legs.

 

Also I posted earlier about the faulty electrical connection under the truck and the reply was to check the firewall connections but all I see is a large group of wires that go through without a connector block.Is there anything else I should look at?Thanks.