Where to get electrical connection for trailer hitch hookup

when I bought the truck, the dealer gave me the wrong wires to connect the lights of a trailer to my truck. where can I buy one that will fit my truck. this is the connector that connects the lights of a trailer to my truck.

 

I just picked up a 2011 MGM Double Cab TRD Sport on Monday night. It has the tow package and came with the 7-pin to 4-pin converter. I think it was an extra dealer option with the ball mount ($77), according to the window sticker.

That being said, if you have the 7-pin plug, Toyota (or others) probably sell the converter you need.

Greg

 

thanks guys. thats exactly what I needed. walmart, here I come.

 

You Know that not the only thing you're going to buy when u go there lol.

 

lol