The problem, as I experienced it, is that the factory pushes the aux wire just into the slot in the rubber grommet in the exit/access hole just inside the front leg so it is not protruding. I knew it was there but it looked as though anything other than needle-like tweezers were MUCH more likely to push it up inside and out of the grommet slot and then it would be loose inside the body....meaning I would have to pop the body anyway. I was not going to go blindly fishing around inside trying to hook something to pull out. Never having seen the aux wire....and wanting to get things right, electrically, I decided I needed to get familiar with what was inside.
There isn't a whole lot of stuff you might be connecting to the aux line that isn't going to eventually require opening it up anyway...plugging in to the Naza controller, etc.. With the right long hex tool ( the ideal tool would be about 6 inches long with a round wheel as the handle end so it could be spun with your fingers. If I found a source of long hex wire I would make one....or buy one if available), it goes pretty quickly. I have a laundry list of things to do next time I pop the hood.
There are (supposed to be) TWO aux power lines....as I understand it. They are, for the newbie, joined, red-orange and grey. They are also quite light wire and suspect by many as inadequate for much amperage. There have been a couple of highly publicized melt-downs...probably more from a faulty gimbal than from normal operation. Actually, in case of a short, a heavier, "safer" wire might have caused much more damage internally in the guts of the Ph....the light wire might act as a fuse of sorts??
I soldered a light, female 2 wire connector from the hobby store to the aux wire....male end to the Tarot....so it easily disconnects. Any connecting pair, such as JST connector set would, I understand, work. You could just power off the battery "balancing" plug (? type of connector) and not use the AUX line at all, and not need to pop the hood.
I'm going to go with the stock aux wire(s) for my tarot gimbal when it arrives....as a starting point.