Hello,
I'm after some help designing a circuit for use in my car and need to find the best way of doing it.
I'm trying to add a switch to allow me to switch between 2 sets of connecting wires, I'll try to describe what is currently happening -
Common rail pressure sensor (part a) has 3 wires normally these connect directly to the connector lead (part b), however now these connect to a box (part c) which changes the resistance to increase the fueling pressure, the box then outputs via another 3 wires which goes to the connector lead (part b).
So what I need is the ability to chose to have part a connected to either part b or part c via a switch mounted in the car.
Now here is the tricky part I have some needed and some ideal parts for this circuit -
Needed -
Switch must have indicator to show me what is connected
Ideal -
Switch can be operated whilst the engine is running - this is the tricky part as if you just flip the connections whilst the engine is running it causes the ECU to error as the common rail isn't getting a voltage, even if it's for a second.
Having not designed a circuit in over 10 years I don't know where to start - Building it isn't a problem, it's just the design and parts I need help with.
Thanks in advance.
I'm after some help designing a circuit for use in my car and need to find the best way of doing it.
I'm trying to add a switch to allow me to switch between 2 sets of connecting wires, I'll try to describe what is currently happening -
Common rail pressure sensor (part a) has 3 wires normally these connect directly to the connector lead (part b), however now these connect to a box (part c) which changes the resistance to increase the fueling pressure, the box then outputs via another 3 wires which goes to the connector lead (part b).
So what I need is the ability to chose to have part a connected to either part b or part c via a switch mounted in the car.
Now here is the tricky part I have some needed and some ideal parts for this circuit -
Needed -
Switch must have indicator to show me what is connected
Ideal -
Switch can be operated whilst the engine is running - this is the tricky part as if you just flip the connections whilst the engine is running it causes the ECU to error as the common rail isn't getting a voltage, even if it's for a second.
Having not designed a circuit in over 10 years I don't know where to start - Building it isn't a problem, it's just the design and parts I need help with.
Thanks in advance.