Originally Posted by
goingbush
You mean the switch that goes on top of the pedal box ? thats the brake light switch. part no 575166 .
Theres a hole on the bottom of the booster , its for a vacuum warning switch on a diesel . blanked off on petrol models.
the 'genuine lucas' 575166 you get now are absolute crap , Britpart are probably better . I went through one every few months (daily driving) until I got sick of it and adapted a Nissan Navara reversing switch to the lucarse part, been faultless since.