Dual-Voltage CCT for Bits

[DarthRacer]

Here is my CCT for switching between a one and 2 battery configuration for Bits:




I would like to add an LED so I know when I have enabled the second battery, but I can't seem to figure out the right way to do it without dropping too much voltage to the load aka motor.

First off, does anyone know the ohm value of a bit motor while in use?
Can someone help me place an LED to show when the second battery is turned on without dropping voltage to the load?

Thanks
DR



I'll update this schematic as this project progresses so everyone can use it.

[1llusI0n]

looks like a good idea, its almost like a boost car.