He's right I tried this on my 2007 GS350 with alittle success the h1 pin is now 12 (White and black wire) instead of 13 (black wire) 13 now controls the back up camera. I was able to access my phone book while driving and make calls. The drawback was they couldn't hear me. So I put everything back to it orginal configuration. Whew! If some finds the fix for this let me know. Holla!