My seats were mounted with tracks that had removable lugs on them, so no holes. Forgot name on tv, but it uses almost NO power., I blew the darn intake on mine and its been in the shop for 2 weeks. $$$$$$$ I made a long trip prior to intake leak and was very happy with a 10.4 mpg out of my v10. I drove 65 most of the way.
Mechanic said he found writing under intake where it was done at 95k miles. Mileage now is 175k.
As far as tv voltage. My battery bank under bed voltages fluctuated as high as 14 and as low as 12.6. Tv didnt seem to mind.