O2 sensor wires

[ydrogs at gmail.com (Gordy Stedman)]

I just got the bosch universal 3 wire O2 sensor
http://www.parts4vws.com/catalog/product_detail.asp?PartNumber=13913
and I need to identify what wires go where. There are 2 white wires and one
black wire. Are the 2 white wires the power and the black the wire for the
signal? Will it become more evident when I snip into them? Thanks.

--
Gordy
MK1 x 3
MK2 x 1