I'm in the process of trying to install my aeroforce wideband kit and I'm needing some help. I'm using two add a circuits but I'm not sure which fuse to tap in to. It says "red and white tap into a 12v source". Does it have to be a seperate source or can put the red and white wire under the same circuit? Which fuse are you tapping into. Where are you grounding at pin 5 or somewhere else? I have tried installing the red and white wire under the same add a fuse and I grounded the black wire to pin 5. When I calibrated the A/F gauge it just said 10.0? I suck with wires someone help please. Thanks in advance.