So I figured it out pretty easy. Stock wiring has 2 plugs next to passenger side firewall. One is 2white wires for heaters. 2nd is one black wire signal. I am using a 14point7 SLC wideband controller that also has a narrowband output. Hooked it up and she is running very smooth and stock Rex Regina is targetting 1.00 lambda which is 14.7 afr. Perfect. When going into boost it drops to .75-.80 which is 11-11.76. very safe.