MK1, this flashes the indicators and brakes at the same time.

this requires:
a trailer socket - https://www.ebay.co.uk/itm/313237695913
a car flasher relay - https://www.ebay.co.uk/itm/186169058970
a 12v battery or power source
Mk2 flashes the brakes and indicators alternately.

this requires:
a timer circuit ( Gerber below for JLCPCB)
a 5pin relay https://www.ebay.co.uk/itm/275570461185
a trailer socket - https://www.ebay.co.uk/itm/313237695913

wire the out of the 555 timer to the relays pin 86
wire brakes (pin 6) to relay pin 87a
wire indicators (pins 1 and 4) to relay pin 58
connect battery + to replay pin 87
connect battery - to relay pin 86
connect side lights and fog (pins 2,5,7) and 555 + to battery + (red)
connect earth (pin 3) and 555- to battery -  (black)


Gerber: https://oshwlab.com/jus360/555-flasher
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