Got my wideband today only thing is I'm not sure how to install the gauge part of it. this is what it came with. i need a 12v power source i hear you can use the radio fuse or something from the under the dash box and to run the white(source/feed) wire to the d10 or d14 pin on your ECU but taken from a post: the bad thing about the aem is that the white wire is a 0-5v output so you cant really run it to d14. you cant use the aem to provide narrowband data to the ecu. and also datalogging from d14 is unreliable because it reads a max of like 3.7 volts.

OP, are you trying to replace your stock o2 with the AEM? if so you should run in open loop and just wire power and ground. then to datalog you can use the white wire to d10 (ELD, which is a true 0-5v input)

 

Not sure if you answered your own post or not but does your wideband need an uninterrupted power source like the ecu or just a regular one? Theres an ignition on 12v accessory spot in the fuse box. I think its the second one from the left. As for running it to the ecu theres a way you can convert one of the pins from 3.7v to 5v, or run it to the ELD one like your post said.