Here is the list of complete LED bulbs for a C5. I tried 2 different 1157 bulbs for the tail light. The 30-LED BA15 on line 1 is very dim, and the Motorcycle Tail 19-LED on line 2 is much brighter, but still not as good as the OEM incandescent. Both were a waste of time and money as there is little if any illumination of the sides of the light.
Moving on to the smaller bulbs...see attached invoice for specific part numbers as they have multiple variants on superbrightleds.
1 BA7 amber for the fuel light
1 BA7 red for the Royal Enfield logo (LED lights do not work for the check engine light so you don't need to buy a second one)
4 BA9 cool white for the 2 tiger eyes, pilot bulb and backlighting for the speedometer
2 BA9 green for neutral and "trafficator" light
1BA9 blue for high beam
These little lights do a great job - nice and bright in full sunlight.
Regards,
GSS