Sorry if this is a stupid newbie question, but this is my first Ram and experience with FCA. It's been Ford's all the way down until now. 
On my last truck, I was able to wire a rear facing trailer light to one of the free toggle switches in the dash. My Ram has the toggle switch group with blanks in two of the spots (maybe for the air ride that I don't have?). Is there a part # (or where do I look for a part #) to replace the blanks with toggle switches that I can wire accessories, like a rear light, too?

On my last truck, I was able to wire a rear facing trailer light to one of the free toggle switches in the dash. My Ram has the toggle switch group with blanks in two of the spots (maybe for the air ride that I don't have?). Is there a part # (or where do I look for a part #) to replace the blanks with toggle switches that I can wire accessories, like a rear light, too?