currently, I have this gauge
https://www.ebay.com/itm/New-HOTSYSTEM-Car-2-52mm-20LED-Digital-Black-Analog-LED-Air-Fuel-Ratio-Gauge/151985322206?hash=item236307f8de%3Ag%3AP7MAAOSw8d5ZUbXp&_sacat=0&_nkw=air+fuel+ratio+gauge&_from=R40&rt=nc&_trksid=p2053587.m570.l1311.R2.TR10.TRC1.A0.H0.Xair+fuel.TRS1
it uses a single sensor output wire, but it reguires a wideband oxygen sensor. Wide band oxygen sensors need a controller so would using something like this make the application work?
http://www.wide-band.com/product-p/apsx_d1diy.htm
Ive spent about 7 hours researching this and have sent a plea for help.