I was replacing an o2 sensor today and since I have LT's, I have to extend the sensor wires (I know I've heard its not good to do, but I have had good luck in the past with just splicing). Well on the Bosch o2, there are 2 white wires (along with black and grey) and as usual I wasn't paying attention and cut the wires before i marked which white wire goes to which. Am I right in thinking these are the pos. and neg. heater wires and it doesn't really matter which goes where. Thanks,

Derek