Not sure how to wire my nest

[Billeverhart]

This is my current wiring. 

And this is my new nest

 i understand Y, C, G, and R. But I'm not sure what to do with the other wires. 

 

[CoolingWizard]

Well, here’s gonna be your first problem with the Nest  Thermostat that you have. In the case of your old thermostat, you have a heat pump and a heat pump that has both auxiliary heating and emergency heating. The nest thermostat you have does not support a heat pump with auxiliary and emergency heating. Only the Nest Learning thermostat and the Nest Learning thermostat E can do that. 

Your current wires and the Nest you have. 
R - Red Wire to Nest R (Power In 24Vac)

C - Blue Wire to Nest C (Power 24Vac)

O - Orange Wire to Nest *OB (Heat Pump Changeover Valve)

Y - Yellow Wire to Nest Y (Compressor Relay)

AUX - White Wire to Nest W (Auxiliary Heating)

E - Brown Wire Not supported.

AC Cooling Wizard

[Jenelyn_O]

Hi there,

Thanks for posting in the Google Nest Community forum. I hope you get the answer you're looking for. Please let us know if you still need help, for us to further assist you.

I appreciate your help, @CoolingWizard.

Best,

Jenelyn

[Markjosephp]

Hello Billeverhart,

I wanted to see if you still needed help. Please let us know if you have any other questions or concerns.
 

Regards,

Mark

[Markjosephp]

Hi Billeverhart,

I'm checking in to make sure that you've seen our response. Please let us know if you have any additional questions or concerns before we lock this thread in 24 hours. 

Thanks,

Mark