Anyone know if this will work for all vehicles including my 3rd gen which doesn't have homelink? If this will, is it hard?

http://cgi.ebay.ca/UNIVERSAL-HOMELIN...QQcmdZViewItem

 

no reason why it shouldnt. As long as you know what wires hook into what. You can mount it anywhere and it is it's own transmitter so it will work on a go cart if ya wanted it to

 

That appears to be the homelink transmitter out of a sunvisor. Very easy mod. I had ripped one out of a es300 sunvisor and mounted it into the cover of the fuse panel in my old tacoma. Just a positive and negative to hook up to power.