Looking for schamatics showing the oxygen sensor wire Looking for schamatics showing the oxygen sensor wire conections for a 2003 dodge ram 1500 pickup - Answered by a verified Dodge Mechanic The O2 sensors start on page 3, but since wiring goes to other locations, you have to look at other pages to see their end points. Dodge Ram 1500 Questions - O2 SENSOR WIRING DIAGRAM - wwwurus›Questions›Dodge›Ram 1500I have a 2003 Dodge Ram 1500 with the 5.7 Hemi. I need to know the wiring diagram for the o2 sensor so I can wire in a narrow band air to fuel ratio gauge. There