Hummer H2 2005 - Backup Lights Circuit Test

This is a quick video shown how to check the BackUp lamp circuit is working from the BCU side of the system.
The video shows the location of the brown connector Connector C3 (circuit 24) in the I/P Relay Block located close to the driver's left foot. C3-A is the Light Green wire (top RHS) which is the BackUp lamp drive voltage, C3-C (bottom RHS) is the Black wire which is connected to Ground.
From here the wire connects to the "IP Junction Block" located inside the rear bumper (middle) and to the Trailer Connector Pin-A (circuit 1624)