Gauge Install problem

[Mitsubayati]

I just finished installing my Greddy Boost, Water Temp, and Oil Pressure gauges this morning. I wired everything correctly with the orange wire going to a constant 12v source, the white wire going to the parking light 12v source, the red wire to an ignition 12v source and the black wires to ground on the chassis. I started the car up and every gauge reads as it should. When I go to turn the headlights on though, the gauges died. I looked at the kick panel for any bad fuses and found that the 10 amp fuse for "Room Lamp" was blown. When I replace it, the gauges worked again. This problem is constant. What did I do wrong?

I wired the white and orange to the wires coming from behind the radio with the red wire coming from one wire in the two wire combo coming from the ignition switch. the ground is on a dash mount behind the radio. Any help would be great. I can use this setup without lights but I don't like to half ass things.


Also, I don't know if it makes a huge difference, but I decided to wire all three gauge power chords to one wire coming from each source. I figured it would be ok but it seems like it may be the cause of my problem.