Check the sensor under the brake pedal, sometime it gets bent and it causes the lights to turn on in off....Get under there and play with it while someone is in the back watching to see if it turns off, bend it back to where it should be.

As far as the cam sensor, your gonna wanna get it taken care of because its gonna start making ur car run rough and stalling ect.

And Lennon Im pretty sure his car is a e46 so the e36 manifold wont fit.