Heated seats?

Can someone lead me in the right direction for a good writeup or walkthrough on installing heated seats with my Clazzio covers? Also, has anyone had experience with just putting them directly under the covers? (I figured this is a frequently asked question but can't find anything)

 

I did see people talk about just putting under a seat cover as the easier way vs removing factory fabric. FYI the heaters use a sticky pad to not slide around though. Fairly recent thread, and my 2c. I have the things for it, just need to find the time.

1st page links to install video
https://www.tacomaworld.com/threads/install-heated-seats-3rd-gen.546859/page-4#post-24786817

 

Thanks man. It seems like it would be A) easier B) work better as it does not have to go through 2 layers? but I could see this issue with the adhesive.

 

https://www.tacomaworld.com/threads/heated-seats-install.468769/