Scale blade runner spinner

[Analyzer]

This place has various "plug and play" LEDs

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i.e. they are already wired up with a resistor for the power source your specify leaving you to simply twist together the wire ends

They have police/rescue style flashing light kits

They have sizes for 1/18 through 1/87 and will do custom ones upon request

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If you contact them they may be able to design a whole circuit for you if you describe what you want

I know people have had them do custom stuff in the past

 

[Pepperbone]

This has likely already been posted, but in case it hasn't > wireless LED lights.

 

[drusselmeyer]

It is possible to build your own. You just have to get the right guage wire and use the right number of turns on the coils.