Xulfi sir, diagram for circuit opening relay shows 2 coils. One is simple coil just like any simple 4 or 5 pins relay. It's ground side is connected with ECU FC pin. The other coil has a resistor connected in parallel with it. It's ground side is with chassis ground and the other side with Starter relay output, which also connected with ECU STA pin.
I have checked the first coil resistance which was around 25 ohms and the second coil has the resistance of 150 ohms (since a resistor is attached with it in parallel).
In previous conversation, a senior suggested two normal 4 pins relays as a substitute for the Circut opening Relay...
But my opinion is to use the proper Circuit opening relay instead of using the standard two 4 pins relays as this may damage the ECU STA pin or do something else wrong to the circuit.
Note: This is my own understanding so far, I may be wrong.