Temp sensor on 993 efi

can anyone point me in the direction of the location of the temp sensor on my wee van?
i have a replacement to fit, i was sure i knew where it was.. replacement doesn't look like the one i thought it was.. DOH!

so.. where does it live?
will there be any fluids draining when i change this?...please dont say coolant!.. fekin tired of dealing with coolant/bleeding up on my van!

it's under the dizzy green plug look under and up by the left hand side door and at the back of the motor and yes there is coolant behind it but with every thing else capped it is a small hole so you will only drag a drop out if you are quick and get the new one in quick behind it.