For automatic transmissions, it's generally found on the passenger side of the transmission, near where the transmission's linkage or shift cable connects to the transmission itself. It's often a small switch, sometimes with a single electrical connector.
For manual transmissions, a neutral safety switch is less common; the starter interlock system in a manual transmission typically works differently and isn't directly reliant on a switch in the same way. You might find a related switch elsewhere in the starting circuit, but it won't be a "neutral safety switch" in the typical sense.
To find it with certainty:
1. Consult a repair manual: A factory service manual specific to your year, make, model, and engine is your best resource. These manuals show diagrams and pinpoint the switch's location.
2. Use online resources: Websites like RepairPal or others dedicated to automotive repair often have diagrams and guides for specific vehicles. Search for "2007 Dodge Ram neutral safety switch location [your transmission type]".
3. Visually inspect the transmission: With the vehicle safely parked and the engine off, carefully look around the passenger side of the transmission near the linkage or shift cable.
Caution: Working under a vehicle can be dangerous. Use jack stands and take appropriate safety precautions. If you are not comfortable performing this task yourself, take your vehicle to a qualified mechanic.