Ok I have a Zeitronix wideband o2 sensor controller but I think this can apply to anyone who has hooked up any wideband o2 controller. I am splicing the harness for the controller into the ECU wires and I have no clue where some of them go.

These are the description of the wires for the controller that I don't know where to connect:
1.) RPM Input(is there an RPM signal wire I can splice into at the ECU? where did you get your RPM signal from?)
2.) Throttle Position Sensor(do I use D11 which is TPS Signal, or do I use D20 which is TPS 5V?)
3.) User Input 0-5v(what the heck does this mean and where does it go?!)

Also the Simulated Narrowband O2 Output, I spliced that into D14 on my ECU harness, is that where this is supposed to go? I believe this feeds the ECU a signal to avoid a CEL, is it out to just splice into this or should I cut the wire and connect it directly, or am I even doing it right?