Volvo: coolant sensor, fuel injection system, wire connector

Question
COuld you please tell me how to replace the coolant sensor in my 1995 volvo turbo wagon. Or at least where I can find it? Thank you in advance.

Answer
Lori,
The coolant sensor for the fuel injection system is in the head has a two wire connector in the rear of the head below the fourth intake runner. The sensor for the dash also should have a two wire connector located in the head below the first intake runner. Both screw into the head.