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Hi Everyone,
I have a Bosch iBooster and the brake pedal from a 2014 Model S p85.
I'm wiring them into my jag and would like to double check from anyone who might no better than me.

Some details
The brake switch has four wires
There is continuity between one red/white and the white/green when the switch IS pressed, but not between any other wires.
There is continuity between one red/white and the green/purple when the switch is NOT pressed, but not between any other wires.

My summary is;
white/green - Brake on
red/white - power ??
red/white - power??
green/purple - brake off

The iBooster has lots of wires;
fat yellow - power
fat black - earth
red/yellow - ignition or brake switch?? (notice this wire branches into 2)
red/white - brake switch or ignition?? (notice this wire branches into 2)

optional wires
couple of CAN twisted pairs.
two black wires that go to a plug in the fluid reservoir. I'm thinking they control a light to the dash to warn you that the fluid is low.

DrJeff confirmed the ibooster wiring except for the red/white wires that i have.

My assumption is that the red/white on the ibooster goes to the red/white on the brake switch as they are the same colours. is that a reasonable guess?
I therefore think the red/yellow is ignition.
 

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