Location of Hi press cutoff switch on A/C

[go 2 x 2 guy]

This S60 A/C blows ice cold until RPM increases above 2000. I suspect a defective high pressure cutoff switch in the high pressure line, but I can't find the switch.

Can someone tell me exactly where that switch is located so I don't have to take off a bunch of parts to trace the high pressure line?

Thanks.