Right now I am wireing my Greddy boost gauge, water temp and EGT gauge. My question is... Can I splice the all three wires together and then into the power sources, or do they all have to be wired seperate?
Thanks,
Dan

 

You can wire all of them to the same source...But be sure to wire them to something that is not getting power when the car is in the off position...ie. the ashtray light.