My 90 GL runs on a Haltech engine management system and it uses a
pretty much standard 3 wire Oxygen sensor.  Irt dawned on me the
other day that I haven't replaced it in the 9 years it's been in
service.  Figuring it was time to replace it, I found a generic 3
wire Bosch sensor at Advanced Auto with the right sized 3 pin GM
styled plug and once I got everything home and apart, the plug  and
the wires won't reach the female connector for the EMS.

since I had to solder and heat shrink extensions on the original, I
cut those wires off the old sensor in hopes of having enough wire to
make the new one reach.  While fiddling around with some VOM
readings, the two heater wires tested out as pretty much not having
any resistance in them, but the signal wire had like a full ohm of
resistance.

I guess my questions go like this:
1. Are there problems soldering extension wires to get the plug to
reach,or do I find a sensor with wire long enough to get the job
done?  Can I use copper wire or does it ned to be that silver core
stuff like is on the new and old sensor?

2. Is a full ohm of resistance acceptable or is that part of the "problem"?

As always, adise is always appreciated.

DM&FS