Sorry if this has been answered before...

Is there an easy spot inside the car to splice/hook into 12v?

 

sunroof fuse, 12v cig lighter things

 

sunroof is ignition controlled so whatever you spice will shut off w/ the car
cig lighter is constant power...

also there is a fuse box in the passenger side wall you might be able to tap something in there

 

tis is true but i wasnt sure what exactly hes installing so i thought id add it

 

I just installed my wideband today, and tapped my 12v switched to my fuel pump fuse in the engine bay.

 

good idea

and being SS/SC he could tap the power source for the boost gauge

 

Yea, I kinda wish I would have tapped somewhere that would be on with just the acc. on, but I dont NEED to know my AFR while my car is off, lol.

The boost gauge power is a good idea though.

 

I tapped the sunroof fuse on the passenger side fuse box.

 

sunroof fuse I used for my 3sixty and my Amp turn on off....only problem is that the radio still plays till the drivers door is opened, meanwhile the system shuts off when the passenger door opens...(incase you didn't know the Sunroof windows and everything that still run after you shut the car off except the radio shut off when any door is opened, the radio only dies when the times up or the drivers door is opened)

 

There are 2-3 spots on the fuse box with unused acc spots on the pass side of car. That is where I used a add-a-curcuit for my scan gauge and wide band.