Originally Posted by jeepdaddy2000
AS CSP stated, LED's draw very little amperage. That being said, the stock light switch should be able to carry them with ease. This would eliminate a second relay and help clean up any extra wiring behind the dash.
According to Autometer (Cory Villani - a tech over at Autometer), all the gauges at full load should be less than 1 amp total. Here's a video that demonstrates the load.
Although the video does not demonstrate the exact same gauges that I have (Phantom II), the current draw will be the same. I think a 4A fuse will be plenty.
I concur, the LEDs will be nothing.