I'm planning on running a wire from my oxygen sensor up to the front of the
van for a air/fuel mixture gauge (i.e., voltmeter).  I'm planning on running
a wire off where the wiring harness connector is in the engine bay.  I've
heard the the oxygen sensor wire is shielded, and figure I better use
shielded wire to run back there from the front.  The only shielded wire I
saw at radio shack was double-wire audio cable.

Is the shielded wire necessary?  Any ideas where I could find some thin
shielded wire locally?

(In case it matters, my sensor is the 1-wire style.)

Thanks!
-Wes
'83 1.9l vanagon.