You use the antennae as a makeshift screwdriver so as to undo the nails which hold the plastic cover on. You hold your breath as the first comes out, certain you have triggered an alarm... but you haven't.
You do the same for the other three nails, trying to be as delicate as possible. Thankfully, it seems to have worked.
Now you need to alter specific components to be able to drive. Hopefully, you know which ones they are.