Oem 7 way plug

I bought the oem 7 pin plug and only have the 4 pin connector. Does anyone know how to connect this? I've looked all over can't find anything

With only 4 wires you'll have no trailer brake control. You'll have to add the power and brake wires or reverse as needed

Or you can buy an adapter at Walmart

I had to get one of these when a trailer with a bad ground fried the trailer turn signal circuit in the TIPM. Instead of replacing the TIPM I used a harness like this that taps into the truck turn signal lights. I think mine was $50 because I already had the 7 pin.

Mopar OEM Dodge Ram Trailer Tow Wiring Harness Kit - AutoTruckToys.com

Doesn't dodge make a 4 pin to 7 pin harness?

The 7 Pin Harness is used with larger rigs because they have braking systems. If your trailer doesn't have an electric brake system, the 7 pin plug is useless to you. However if what you want is to get rid of the hanging harness under the truck, just plug in the wires from the current 4 pin into the adapter you bought and get an 7 to 4 adapter from Harbor Freight.

That should get you the result you are looking for.

Else you would have to source a complete 7 wire harness and start at the front of the truck.

I key piece of advice though, Unless you intend to tow rigs that require a Brake Controller I would not install the 7 pin plug. it could lead someone to believe you have a brake controller and hook a larger rig that what your truck can handle. At the very extreme worst it could be life threatening if you tow a rig with brakes you cannot activate properly...

My 2 cents

Good advice I will just hook up what I need then I put it on bc I want the stock look for my bumper instead of a dead hole.

If you want to hook that up, all you need are 3 additional wires:
1. Brake controller signal
2. 12v constant
3. Ground