Maasdam MPT202 Trailer Wiring Adapter with 7 Way Blade to 4 Way Flat for Vehicle and Trailer End

hey what's up you guys today we're going to show you how to convert a four flat wiring harness into a seven round wiring harness that will allow you to tow a trailer that has trailer brakes or has a charge line let's go ahead and break that down so we will be using u-haul part number 47185 this is a dual plug that comes with both the seven round and the four flat so that you won't be completely getting rid of your four flat on your vehicle now this is really easy to hook up first we'll show you how to hook up the lights so to hook up the lights we're gonna take the four flat connector on our seven round wiring and we're just gonna plug it into our connector on our vehicle now we're going to take our white wire with the ring terminal and we're going to ground it onto the frame of our vehicle we're going to be using a self-tapping screw and to locate the best grounding position we want so