Nest Learning Thermostat Compatibility Help

[StitchinQween]

Hello!  I would like to replace a Lux 1500 thermostat with a Nest Learning thermostat, and the compatibility checker says it "may be compatible".  I have wires connected to G, Y (although this is a blue wire labeled Y), W and R with a jumper between Rh and Rc.  Forced air gas furnace and central air.  Can I use the learning thermostat and how would I wire it?  Thanks in advance!!  @CoolingWizard 

[CoolingWizard]

@StitchinQween , as you stated, your wire in use are:

Rh/Rc , Y, G, W

Do you have and spare or unused wires in your thermostat cable? I ask this because the Nest Learning Thermostat has only an internal battery and have a C wire is best. 

AC Cooling Wizard

[StitchinQween]

No unused wires that I can see.  It's kind of a jumbled mess and I didn't want to jiggle them too much.

I misstated before...The red wire is connected to RH and there is a black jumper between RH and RC.

[CoolingWizard]

@StitchinQween , that is ok, just choose the Nest Thermostat model you want to use. And I will be available to help if needed. 

AC Cooling Wizard

[StitchinQween]

Thank you!