@Ktstull This is your previously posted picture of your purple wire .
Can't believe I didn't see this before !
See the orange/dark blue wire just above where your purple wire is inserted into the BCM C-5 connector , I believe the purple wire is supposed to be spliced into that wire !
The instructions clearly state to insert the purple wire into the BCM C-5 connector at socket #45 , it also states if this socket is already populated to solder splice the purple wire into the Orange / Dark Blue wire ....
I've installed several of these kits and everyone I've done I had to solder splice the purple to the orange & dk blue wire ?
Some trucks are a bit different @ the PDC and at the tailgate lock but all the ones I've done there was already an Or/DB wire @ socket #45 of the BCM C-5 connector. It's a bit tough to get in there to perform a good solder splice , but I've always had to splice the purple to the OR/DB wire .
Hope this helps !