Quoted from herg:
The family's napping, so I had a little more time to work on the blinkers. I have a solution, but it's no cakewalk. I disassembled some LEDs and added capacitors to the inside. Since there was a bridge inside of them, I didn't need the diode any longer, just the capacitor. They're the ones from Comet, so I'm not sure about others.
These are bayonet blinkers, so they're more work than the wedge would be.
1. Desolder the bottom contact.
2. Break loose the glue holding the metal base on the bottom and remove it.
3. Break loose the glue holding the white plastic ring from the small PCB and remove it.
4. This is a 1uF surface mount ceramic capacitor in an 0805 package. It is just the right width to be able to reach the DC output pins of the bridge.
5. Solder it in place.
6. Reassemble everything, using glue to secure everything again. Sorry, no pictures of this step.
I modified six of them and put them in my TZ with GI OCD. I can now drop the brightness down to 1% and the blinkers still blink.
As you can see, however, it's a bunch of tedious work.
Did this with my cointaker flashers, so far so good