If you tow a trailer or caravan that has either a seven pin flat or twelve pin flat both of these can plug into the twelve pin on your car.

Wiring a trailer plug to car.

The suggested minimum for the ground wire is 16 gauge. The minimum suggested wire size for a 4 way trailer plug is 18 gauge for the turn brake and running lights. Next up we have the twelve pin plug. On the tow vehicle our preference is to mount a twelve pin flat. Make sure the wiring harness will reach the trailer s connector receptacle. The suggested minimum for the ground brake power and battery hot lead wires is 12 gauge.

How to wire a trailer plug 7 pin diagrams shown. Some manufacturers will use red black wires instead of brown green yellow. In this video we go over how easy and fast it is. The minimum suggested wire size for a 7 way trailer plug is 16 gauge for the turn signals brake lights reverse lights and running light wires. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. For trucks remove two bolts on the side of the truck bed and pull out the tail light assembly.

12 pin trailer plugs. Does your vehicle have a 4 flat trailer wiring harness but you need to tow a trailer with a 7 way harness. There is a standard method of wiring a 7 pin trailer connector. Also you can plug a seven pin flat into a twelve pin flat making it more versatile. Blue electric brakes or hydraulic reverse disable see blue wire notes below in the trailer wiring diagram and connector application chart below use the first 5 pins and ignore the rest. For cars the assembly is likely located inside the trunk.

If you don t follow this your trailer or tow vehicle can t be used with any other implement.