I installed this same socket on mine. Same place but just a little further back on that side piece since there was a little more room behind the panel. I just wired directly to the terminals and it's working as, well, it should.
The only PITA was dealing with a) the big styrofoam block in the battery compartment and b) the little rubber nipple grabs that keep the battery cover in place. I can see some time in the future dropping the battery to the bottom and putting a spacer on top to keep it from rattling. Easier to deal with wired fuses, easier to access top of battery and a bonus of a lower cog. Not sure what to do about the rubber nipple connectors....yet.