mechanical boost gauge installation help

[drift_king]

iv got a boost gauge, with 2 wires(one ground,other 12v constant)

im just confused on where to put the 12v wire, i realize i want it to light up with my gauge cluster lights.

how do i do this? where do i put the 12v constant wire to?

[D.Adams]

i hooked all my gauges to my dimmer switch on my dash. that way when i dim the lights the gauges dim also.

[Hashiriya415]

it's a LED inside so you can plug it almost anywhere, easiest is get the wire and splice with your light switch or stereo or heater control