Jim,

Funnily enough this was being discussed on another thread last night, I have done the same myself before. Thanks for the links, they are useful.

I've not found you need as low as 5ohm (1 Amp load) on the 5v rail, thats 5W dissipation (10W rated resistor). I found 47ohm (0.1A, 1W rating) adequate.

Irving...