I've added, 3 to the one that was there.
But it's not worth the pic, the air slits are not straight upwards, they are slighty away from the user in front, so you don't see the light, only if your nearly above the thingie, so i removed them and put em below the catridge slot for better results, but same here.
If theres no catridge in and you open the slit with your fingers the light can be seen, but normaly you will put catridges in while the machine is off, so nearly no light can be seen while the thingie is operating normaly.
Sorry for no pics, its not worth it, just the replacement of the front led can't be seen, but
I guess everybody knows how a green led looks, not that intresting.
Maybe I should drill holes in the Megadrive and put the leds there.