Thank you guys for your help with this matter. Just an FYI, I tracked down the Parts-People.com that created the videos talked about by Christophe. These folks also have step by step documentation on all Dell notebooks including XPS, Alienware, Inspiron, etc. I hope this helps!
MrDanAZ
For E7470
https://www.parts-people.com/blog/category/dell-latitude-repair-manuals/latitude-e7470/
for all other Dell notebooks
https://www.parts-people.com/blog/category/dell-repair-manuals/