5 wire O2 sensor wiring problem

[ramen]

I just bought an 5 wire o2 sensor from ebay, and i found that the wire is not enought long,so i want to extend the wire by cutting the old o2 sensor hardness. I found that the new o2 sensor wires color are red black white yellow and grey, but the old o2 sensor is red black white yellow and orange. Is it i just connect the orange line to grey line? Or i need to refer back to the o2 sensor wire diagram. The old o2 sensor is L1H1 and the new one is bosch 13246.