I can only find one rear o2 sensor- the passenger side. I don't seem to have a o2 sensor on the driver's side catalytic. Is this possible that it only has 1 rear o2 sensor?

 

I think the driver one is much closer to the engine...I forget exactly where...mine have been gone for years...but you should have two...

 

When I stripped the exhaust manifolds and took out the catalytics, the driver's side catalytic( the one that looks like a big round can doesn't have a o2 sensor hook up on it. So I'm wondering if the only rear one is the one by the passenger side catalytic- cause that one has it, but it's before the ypipe so why wouldn't the driver's side have one too then.

 

NEVERMIND - BUT
I'm an idiot! I found it, it's on the pipe farther down. I tore this apart a month ago and I have scrap laying around the garage.
But, I had to cut the wires when I dismantled the manifolds and ypipe. So, for the driver's side which wires is the front and which one's for the back? the cut wires are still connected to the connectors and I don't remember which ones belonged to the front and to the rear.