Hi, i'm installing the D3, does anyone know a easy connection location for the reverse wire on a 2004 GMC Sierra? thanks!

Once is enough.

Reverse Light lt. green + BCM, black plug, pin F

Notes: The BCM (Body Control Module) is under the driver side dash. It has 6 plugs in it, the purple plug is on the back.

thanks appreciate it!

Yes it was the lt green in the three wireblack plug on my 03 gmc sierra with onstar/regular bose. Thanks for the help !!!