Dang! How far you headed? Ready to navigate.
I will be installing a 12V socket up front this weekend for my battery tender use as well. I have a different plan in mind, one that will not put the socket/plug in front of the key or display. I'll post up a link to mine when completed if the OP does not mind.
I posted my thread here.please post yours and if it is more convenient in location, I might copy you