Well spottedBetter solution...where the red cap is that you lifted up, it is attached to a larger cap that also pops up from the passenger side. THis exposes a perfect spot for all aftermarket attachments. It is hot so as directed be cautious. There is also a ground nearby as pictured above. So, rather than unscrewing the jumper post, there are already two posts to tie into. The two oval things on the black part are actually knockouts so you can have your wires come out cleanly from the hot post.