Before spending too much time on this you might want to check if it's legal. My oldest grandson got a ticket a few weeks ago for having a row of blue leds between his tailgate and bumper on his pickup truck. Blue lights are limited to police vehicles in Ohio. The weren't blinking, just a led strip that came on with the tail lights.

 

Good advice.

In Colorado the statutes (they claim) say that only police vehicles can use blue lights, yet most snow plows use blue lights. Go figure.

 

I'm in Thailand, it's ok. There are tuk tuk with flashing lights, and many people uses strobes.

they provide both +12V

 

Ok, I made the circuit. It works on the bike. Although I think the resistors may be too high as the light are a litter dimmer. and the motorbike display I think it receieve extra electricity when the bike is turned off and the lights are switched on. The display lights dimmely extra cristals.


thanks everyone for the help.