Because they want to be:)
A CMOS (complementary metal oxide semiconductor) sensor is typically used in the constructing integrated circuits. It is used in microprocessors and microcontrollers.
voltage sensor, alarm circuit, Pulse generator, counter, register and timing circuits.
Normally a PIR sensor has three cables. Brown: + Blue: - Red: Sensor control Connect the brown and the blue to your power in. All lamps must be connected to blue and red. When the sensor detects movement it "transfers" the ingoing power from the brown wire to the red wire meaning that the lamps for a given period has both + and - = the light up.
The "hot" wire between these two coloured wires will be the blue one. The green colour is always used as ground in electrical circuits.
flashing blue means you have an electrical issues with the coolant sensor. you probably have a bad sensor that needs replacing in the coolant bottle hope that helps Phil
Joseph S. Cooper has written: 'Structuring blue in circuits the blood can be used'
BLACK WIRES=HEATER CIRCUIT WHITE WIRE=SENSOR GROUND BLUE WIRE=SENSOR PLUS VOLVOKAHUNA.COM
Idle control sensor on the driver side strut tower. The cover should be blue.
They are blue, black and white. They can be found extending from the catalytic converter (the upstream O2 sensor) and possibly from a second source (the downstream sensor).
Looking for the ESC myself....the Knock Sensor wire is blue though.
it should be right beside the thermostat its a 2 wire sensor usually with a blue insert on it
solid yellow is plus