[Piddy]

If you have a gauge that allows you to supply EXTRA current to make it brigher... I'd tap it into the knob that controls the brightness of your dash lighting so that it can also be controlled. If the gauge requires a resistor to dim it (like the Omori).... you can pretty much tap it anywhere. I went into my stereo wiring.

 

[Piddy]

Ideally, you should run two lines... but the difference won't be noticeable. I'm currently T'd into my boost controller and boost gauge (Blitz DSBC and Omori).... but when I tune I will have a dedicated line ran to another boost gauge. I'd say for day to day driving... you'll be fine.