Reverse gear signal on factory HU harness?
 

Can anyone help me identify the reverse gear signal wire on the BRZ factory head unit harness (harness side, not head unit side?) basically, I'm trying to wire in my Parrot Asteroid Smart, but can't find the reverse signal wire to go into the Smart unit connector

Any help appreciated

Its' the orange white wire on pin #2 on the 24 pin connector

Thank you - that's why I love this forum.