well a wide band is alittle more complicated then that, it has 5 wires for a reason. you cant just hook up a multi meter to it(even if you could, the refresh rate on most multi meters is too slow) you have to have a controller, wideband o2s need to be heated and all this facny ---- to work right.

 

actually he was referring to it as just a display for an l1h1. not only will it not work, but you need a controller for the l1h1 as well. as far as display units go there's this circuit that allows you to use an autometer AF gauge as a wb output. its 50bucks and i think only works with their wb controller. it also sux cuz there are no numbers on the autometer so you have to memorize their scale.