The CVO Ultra seat differs from the H-D SunRay seat because it has two seperate heaters (front & rear) each with it's own hi-off-low switch. The two connectors on the bottom of the seat are supposed to be connected to a 'Y' adapter which is supposed to be connected to ONE plug on the bike harness. There are two main harness plugs there the seat adapter could plug into since they are the same type. One is the plug all touring bikes have that is controlled by the Accy. switch... the other one is there specifically for the CVO heated seat. If it's plugged into the wrong one, you would have to turn on the Accy. switch AND the seat switches to get heat.
A heat gun is not really a good test because the heating elements are so deep, covered by alot of foam, which is not a great heat conductor. The best test is to verify the seat is connected to the correct plug, (or Accy. switch is ON) flip the seat switch up (HI), and go for a ride. By sitting on the seat you compress the foam, which makes it more able to transfer heat, and it gets the seat surface (and your butt) closer to the heat source.