3DR power module wiring

Using APM 2.5with a 3DR power module but I want to add a Pololu switch to power up the board. I need to isolate the 5 volt lines on the DFC 13 cable. I thought it was the red and adjacent black wire but the board powered up regardless

Here is a link to the APM2.5 schematic: diydrones.com/forum/topics/a … -schematic
The “Mystery” port on the schematic is the PM connector port. You will notice that two of the outer cable wires (1&2) are +5vdc and the other two wires on the other side of the connector are the GND (5&6) wires.
TCIII ArduRover2 Developer

[color=#004000]Moved to Hardware / Power Modules.
Please post your support requests into the correct forum![/color]