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.

[theholycow]

Do they have a connector on the end of the wire? If they're both still intact, you could just probe the connector and wires (with your multimeter set to resistance or continuity) to match them up.