Ok i will do that. I just dont understand why their own products are not plug and play. /sigh

 

I'm doing the same thing....I took the white signal wire (picture below) and connect to one of my analog wire that goes to the digital gauge.
My digital gauge can compute the AFR if you feed the volts value (see the value below).
If I'm not mistaken, the controller in the picture is the square plug that connects the 02 sensor to another cable that goes to the AEM ECU?
I think there is a resistor value on the plug and they called it controller?
http://imageshack.us/a/img840/6993/aemwideband.jpg

 

they were 10 years ago when the product was released you just didnt get the cable that it came with lol

 

Lol the gauge is new and has all the cables. ECU is obviously used and i did not recieve any cables with it. Always an adventure. I will go learn me some stuff. Thanks.

 

I'm on the same boat. Picked one up used with out a cable and want to confirm it works. I use to have so many serial to usb adapters but threw them out when I moved.