Firstly hello All, I am new here and have a problem but would also like to help others.. (UK 3.2 standard car)

I have the dreaded BAS/ESP light on, I have read many posts and tried many things including:

Steering Calibration
Reset
codes read (c1160) yaw sensor
replaced Yaw sensor

it seems the many mentions of brake switch, ordered a new one (that doesn't have the same connector so looks wrong) While attempting the change I noticed the exiting switch
has two banks for connectors mine has only one 2 wire plug in one and the other is empty.. is this correct? or am I missing something, I have tried searching schematics for brake light and ABS systems.
and cannot find anything conclusive apart from a pic with two plugs in.. IS this for SRT only??
My brake lights work, but believe this also control ABS

HELP

Many thanks in advance Martin