Hi guys, i'm trying to reverse engineer and alter (not for any profit or gain of course) a part of my car. This particular PCB contains a hall effect sensor which are new to me. From what I understand is the sensor allows a greater flow of electrons through it as a magnetic field passes it. the questions I have, if I may are: do the sensors ever become 100% efficient and allow all the current flow through or is there always a loss? is it possible to bypass the sensor with a switch? From what I can fathom out is that the sensor output is monitored to a certain degree and when the current rises to, or above, a certain level, the circuit will switch. From that I assume that connecting the input voltage to the output pin via a switch would allow a fake signal to be generated to the switching part of the circuit. It would great if anyone could confirm, deny or help with this. The hall effect sensors are, I believe, unipolar, 4 pin (dual earth) IC's. The number on the top is 41E if that is any help. Thanks in advance to anyone who can help.