Originally Posted by sushiguy732
I heard that by doing that, at least with the Pioneer systems, that will not work. I have not confirmed it but I may try that first. thanks.
The guys at Crutchfield told me this wouldn't work either for my Kenwood DNX6990HD unit. They gave me directions to run the wire to the RAV4 fuse box located above the handle for opening the hood and then connect it to the parking brake wire located in this fusebox. I looked at doing this, but then saw how tight the area was and decided to just try grounding it instead to see if it worked. I haven't fully completed my installation yet, but at least with the RAV4 sitting in the driveway everything seems to work including playing the DVDs.