Lexus GX 2010+ :: 2011 GX460 AC Refresher Kit - Evaporator Drain Plug Location?

Recently picked up a 2011 GX 460, premium, black exterior, sepia interior. New to the forum and love the truck!

Question: Where exactly the evaporator drain plug is located for my truck?

When I start the AC there is a noticeable musty smell from the vents that goes away after a few minutes. A fellow lexus owner friend told me I needed to purchase the Toyota AC Refresher kit which will clean out the musty smell. I bought the kit from Lexus Sewell and found a YouTube video highlighting how to use the kit.

Step 1 is to use a can of foam to clean the AC evaporator coils. To do this one must connect the can to the evaporator drain plug. The video states to find the evaporater drain plug to run your AC for a while and look for the condensation dripping out of the plug and that is where you plug in. However for me the weather has not been warm enough yet this year to allow for the condensation to occur.