aCarNamedFrank

I'm trying to finish up my project after swapping an ex engine and pcm into an lx body. I pulled the wiring for the downstream 02 sensor from the body harness in the ex and now the wires are dangling through the firewall. I know a few people have figured out how to wire this directly into the pcm but the color for the wires didn't all seem to match the descriptions and a few things just seemed unclear. I know one of these needs to be connected to ignition power (I've heard through the back of the stereo works) and one to ground, but I'm not certain which ones. Any help identifying which are which and which pins they should go into would be a huge help. Thanks y'all!
I've got a pink wire, a blk/orange, blk/white, and a large green that splits into brn/yellow and wht/red. Even just identifying which is hot and which is ground would be a big help.