There are sensors on the engine, transmission, differential, brakes and the list goes on. You did not specify as to what you need to know.
what specific sensors?
In the fuel tank
at the end of the top radiator hose.
It is built in to the fuel tank
the ecm is behind the dash on the passenger side, but it can also be reached behind the pasenger side front inner fender behind the plastic in the wheel well.
In a 1991 Subaru Legacy, the speed sensors can be found on the driver's side of the transmission. They are located towards the rear, and there are three of them.
the neutral safety switch is in the center consol conected to the shifter (a/t's) only
Inside the fuel tank.
1-8-4-3-6-5-7-2
All O2 sensors are threaded into the exhaust system at various points. Upstream O2 sensors are located before the catalytic converter(s) and downstream O2 sensors are located after the catalytic converter(s).
take the keys out of the car x0
67 Camero has a vent window. 68 Camero's do not.