hey i have some autometer gauges and a sunpro tach i would like to wire. i have a diagram and i think im hooking them up right. if i turn the key just to get the power going they work. as soon as i really start the car and get the engine running it stalls. it only does this when i have a gauge hooked up. am i wiring them wrong or something?

does anyone know how to wire the gauges. they are a tach a volt gauge and a fuel gage thanks.