I've searched around a bunch, but I haven't been able to find how people usually wire up 12v power to their wideband O2 controllers. Is there a common place that people splice into? I was thinking about splicing into the radio connection (since I don't have a radio) or maybe wiring something into the main fuse block? I'm running the TechEdge 2J2 unit.

If you have a setup that works well, please share!

 

I just use the power wire from my radio. You can also tap into an ignition wire. Theres a million ways to supply power to accessories. Theres no one correct method.