Been doing a bit of research and just wanting confirmation before I carry this out.
This is on a B2 90 with a 3b engine and Motronic ECU, I havent found my Diagnostic sockets yet and suspect I dont have any so will be tracing the cables from the ECU loom, either way if I find them or not I will be fitting a 16 pin ODB2 socket.
I want to make a portable blink light which will be on an OBD2 plug.
I will be connecting as per the first photo and the blink light will be connected as per the second photo, ill fit a momentary switch for the jumper.
Question 1
My understanding is that the 3rd connector from the right which is the blink signal is a negative? If so does that mean I can use any of the 'Manufacture Specific" pins as per photo 3 and it wont cause any issues if any other diagnostic equipment is plugged in due to being a negative?
Question 2
What is the reason for the resistor in the blink light diagram? I have some 5w LED 501's that I was hoping to use one for this.
Question 3
If the resistor is required what size do I need?
This is on a B2 90 with a 3b engine and Motronic ECU, I havent found my Diagnostic sockets yet and suspect I dont have any so will be tracing the cables from the ECU loom, either way if I find them or not I will be fitting a 16 pin ODB2 socket.
I want to make a portable blink light which will be on an OBD2 plug.
I will be connecting as per the first photo and the blink light will be connected as per the second photo, ill fit a momentary switch for the jumper.
Question 1
My understanding is that the 3rd connector from the right which is the blink signal is a negative? If so does that mean I can use any of the 'Manufacture Specific" pins as per photo 3 and it wont cause any issues if any other diagnostic equipment is plugged in due to being a negative?
Question 2
What is the reason for the resistor in the blink light diagram? I have some 5w LED 501's that I was hoping to use one for this.
Question 3
If the resistor is required what size do I need?
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