Jason wrote:
Actually, I just realized...

There's only an R on the new thermostat ... so I wouldn't need a jumper
anyways.

So do you still think that I should just fold back the black wire and be
done with it? I'd still connect the R from the furnace (red wire) to the R
on the new thermostat.

If I were you I'd get a second opinion.

hvacrmedic