Before we all go crazy with these LED indicator replacements, I'd urge you to please compare the output of these LEDs against the stock halogen yourself in the daylight to ensure you're happy and aware of the difference, you may be surprised how much duller they are.
When I swapped mine out at night, I thought they were a little less bright but was willing to give it a go. What sealed the deal though, was when approaching my car in the daytime and unlocking I could barely see the indicators flash at all. Quite a significant difference, and potentially dangerous one at that.
At the moment, I don't personally feel these are up to the job, and don't want to risk other road users not seeing my intentions (even with the side mirror LED).
I know we are all enthralled in our new vehicles, and I'm always the first to try any new mods, but let's please not forget that your own and other road users safety should always be your priority.
Drive safe everyone.
edit: Consequently, if anyone's interested, I have a spare set of these now as I originally bought two sets but will be putting the indicator ones in the reversing light. £10 including postage, saves me returning them.