I have not had too much of a chance to run the seat heaters. What little I have run them, they seem a bit slow to heat up. Perhaps its just my impatient side kicking in. The 2010 Fusion seems to heat up pretty quick but maybe that is because I am busy doing something (driving) instead of just sitting there, waiting for a seat to heat up.
I hope you have found this informative and / or helpful.
This task took me entirely too long in my opinion.
While there are several threads on the subject, I had a hard time with the console. I attempted to remove the entire console but got stopped by the shifter cable. I wasted a lot of time with this step and as it turns out, in my opinion, is not necessary.
I had wanted / thought the console should be removed to help feed the wire harnesses to the seats. As it turns out, running them near the air duct and forward was much easier and more direct.
I also spent a lot of time looking for where / how to connect the seat heaters for power. In the end I temporarily tied into the connector that I have shown. I intend to tie into the connector permanently tomorrow.
Tomorrow I will install the pads in the front passenger seat, run the wires and close everything up.
This getting old stuff is hell, but, it beats the alternative.