LED Turn Signal Questions

Greetings from Boston Massachusetts,
I'm installing aftermarket LED turn signals and they did not come with resistors or instructions. I need to install resistors because I'm getting the error message on the dash and the hyper flash. I have 2 questions:
- I can't seem to find the right answer to which resistor size to use. I read on one of the threads that a 7.5 ohm was referenced but not used so I don't know if that's the correct size. Does anyone know?
- Some research suggests only 2 resistors are required, one wired to the front pair and one to the rear pair, while others state the each light needs its own resistor. Has anyone had any experience wiring led turn signals and can share the facts?
As always, thanks for your help
Rick

Hi Rick, each light needs it's own resistor, the original bulbs are 10w:
10w resistors

Thank you.