Ok guys, I'm currently attempting to wire up my first air/fuel ratio gauge and I've hit a snare. the gauge has 4 wires, red, white, green and black. Now i have the the green and black hooked up already, the green hooks up to the signal wire on the o2 and the black is a motor ground.
Now the red in the instructions says to hook up to a fuse protected source of +12v, now where should i go about putting that?
The white says it needs to be hooked into a circuit energized by the headlamp switch or tail light circuit, where do i put that wire into or onto?

 

Narrowband or wideband?

 

NarrowI believe, but nevermind though,I figured it out finally after a couple guess and checks haha. But now I have to back to the o2 wiring and redo it causeI think its a lil tooloosely woundand makin the gauge go a lil crazy at times ha, I'll get it workin 100% soon enough thoughha.

 

actually a narrowband will go crazy like at idle its going to just keep jumping back and forth. The narrowband is pretty usuless....all it does it give a nice little color light show

 

Yuppp, figured that out now haha. I'm about to just take it back out and wait til i can get a wideband haha.

 

i use a narrow band the only catch to these is they only work at wide open throttle

 

Narrow band is ****ing useless.

 

12v is self explanitory. You need 12v (it should specify switched or constant, I'm assuming it's switched). Go to the ignition harness for your power and make sure that your conenction is good and secure. You'll need to find the positive trigger for the lights, can usually be found either at the switch or in the drivers side kick panel. check the 12volt.com for wiring diagrams.