The basic purpose remains the same whether your truck and trailer is using a 4 way 5 way 6 way or 7 way connector. Yes the 7 pin round connector is wired differently than the 7 way flat rv connector.

Trailer Connectors In Australia Wikipedia
Heavy duty 7 pin trailer plug diagram. Pls read the plug diagram carefully and refer to the diagram to install this 7. And we offer so much more than that. If your truck has a built in 7 pin socket but you only need 5 of the pins. Were happy to help guide our customers to the right trailer or snow plow for them. By law trailer lighting must be connected into the tow vehicles wiring system to provide trailer running lights turn signals and brake lights. 7 way diagram 7 way diagram.
Trailer electrical connectors come in a variety of shapes and sizes. Trailer light wiring diagram 7 pin plug pro latest lights 7 way wiring diagram inspirational 6 way flat trailer wiring. 5 pin rocker switch. 7 way trailer plug wiring diagram heavy duty ford truck tractor trailer wiring connector diagram semi wire harness 7 semi trailer wiring 7 pin. I will list the typical heavy duty truck wiring connections inside the plug on the trailer side for you. Use the 7 pin connector anyway see below and just leave out the last 2 wires.
7 pin heavy duty round plug and socket 7 pin heavy duty trailer wiring diagram manufactured in accordance with the saej560 standard and in accordance with the australian standard as4735 2003 as required for vehicles and trailers over 35 tonnes. The 13 pin version being phased in is newer provides more services than the 7 pin a more positive locking and also better protection against moisture and contamination. Trailer connectors between the trailer and passenger car light truck or heavy trucks with 12v systems in europe both 7 pin iso 1724 and 13 pin iso 11446 are common. Zinc die cast socket is self grounding and includes floating pins for easy alignment and maximum pin contact. Stop into our harrisburg pa dealership today or call to learn more. In the trailer wiring diagram and connector application chart below use the first 5 pins and ignore the rest.
Lowest prices for the best wiring from pollak. 7 way copper blade molded into a heavy duty plug provides a fast and simplified way for wires connection as well as keeping all your trailer wiring in ordercautions.