Hi, just replaced a micro switch just above the mass air metre, think it works the throttle? the base terminal is a command terminal and it has two other terminals for 'always on' and 'always off'
which position should this be set for? on or off?

 

That looks like the enrichment switch mounted at the throttle body.

My guess....hopefully others will chime in....is that is should be 'always off' until the throttle is opened wide....at which points it turns 'on'. So, use the terminal marked 'normally open' or 'NO'.

Cheers
DD