Problem with "Blinkers" for bike trailer?

sorry, I forgot about the resistors in the circuit. Also thanks peter, but the LEDs are fine making them blink and stuff. I have also previously made an LED cube which is cool.

Resistors (R1 and R2) are 15 ohms.

LED1 LED2
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R1 \ R2
| \ |
| \ |
pin 13 GND Pin 12

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| Arduino Board |
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Pin 10 Pin 9 Pin 10 GND
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Switch 1 Switch 2 Switch 3
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