A lot of newer hard disks either don't have the header or don't have an LED at all.
Anyone know if there's a general specification for voltage and current on the ones that *do* have the header or solder pads (and if so, what the specs are)? It'd be nice to be able to put in an LED and just leave it instead of having to change LEDs when you changed HDs, and it would also be nice to know what LED to order/use...