The 7-way connector is the most popular trailer connection type found on late model SUVs, trucks and RVs and comes with everything the others come with along with the availability for backup lights. There are two different types of 7-way connectors, one with flat pins (blades) and one with round pins.

What type of wire is used for trailers?

Recommended Gauge of Wiring for Trailer Lights Trailer wiring generally uses 16 gauge wire, part #16-1-1. However, with a long trailer like yours you may want to go with a larger like 14 gauge #DW07550-1 or even 12 gauge #12-1-1.

What is the most common trailer plug in Australia?

The only connector used on the Australian market that is fully ISO standard conformant is the 7-pin ABS / EBS plug. Since Australia has vehicles from both the North American market and the European market there is a mixture of 12V and 24V.

What is the difference between a 4 pin and a 7-pin?

The only real functional difference between them is that on part # 37185 the 4-pole trailer connector is located to the side of the 7-way, rather than under it as with # HM47180. Both adapters plug in at an existing 4-pole vehicle connector and re-format those lighting signals to the 7-way configuration.

Can I replace a 7 pin Ficm with a 4 pin?

Yes you can use either one in any 6.0 however the half shells arent compatible with each other for obvious reasons lol one has 7 pins and the other has 4 pins.

What is the blue wire on trailer?

It is an auxiliary wire typically used to connect the reverse lights from the tow vehicle to the reverse lockout solenoid located directly behind a surge brake actuator. When properly connected it allows you to disengage the trailer brakes in order to back the trailer up (without getting out of the vehicle).

What is the black wire on trailer lights?

The black wire of the Hopkins 7-Way Molded Trailer Wire Connector # HM20048 carries the 12 volt accessory circuit. This is the circuit that will typically power interior lights or charge a trailers battery.