Hey my husband has a 2005 Dodge Ram 2500 Diesel truck. Our DMV notice said that he has to smog it. We bought it with straight exhaust with no cat or muffler. We had to install a muffler after a decible ticket, now we need to find out if the "stock" truck has any sensors, we took it to a smog place and they pointed out that there were 2 readings missing, is there any sensors in the exhaust that we are missing? There are some wires by the manifold but they dont go anywhere, any help would be great.

Questions
1. Were there sensors on a stock 2005 Dodge Ram diesel 4x4?
2. Where should the sensors be located?

Thanks for the help
Sandy