Those of you with a denso o2

[jeff89fbird]

Is your signal wire a tiny bit thinner than the stock o2's wire. I'm installing a heated 4 wire o2 and just noticed that, and I'm concerned if the added resistance of the smaller wire will effect the signal or not. And if so then I need to exchange it for one with bigger wires.

Or is it enough to worry about.

[tractorman]

You're talking about a signal that's going to be less than a volt, MAXIMUM. It ain't gonna matter.