Nothing to connect home button to on replacement screen
I just bought a replacement screen for the iphone 6 plus and began disassembling the screen and home button but the replacement screen doesn't have a spot for me to plug in the home button
The home button plugs into the home button link cable, which is a flat ribbon cable sandwiched between the back of the display and the shield plate.
If the part you purchased does not include a new home button link cable, you can use this guide to transplant the cable from your old screen to your new one (assuming it is in good condition).
If you prefer, we also offer replacement screens with the home button link cable preinstalled to make your repair easier (they do cost a little more). If you bought your screen from iFixit and would like to return it and purchase the "full assembly" version, just call or email us here. Hope this helps!