One has flat pins which are often referred to as blades. The other has round pins.
Check out 7 wire diagram for trailer plug for a quick reference on trailer wiring.
7 way wire. 7 way connectors allow for all functions provided by 6 way connectors three basic lighting functions electric brakes and additional power supply with the seventh wire for backup lights. For long term use the connector on the vehicle should be replaced with a properly wired 7 pole connector. Anto 7 to 4 way wire flat taillight electrical adapter for coleman starcraft aliner rv electrical trailer socket adapter with mounting bracket holder 7 rv blade plug and 4 pin wire.
7 way trailer connectors are found on most recreational vehicles and are used on a larger gooseneck 5th wheel boat and utility trailers. The round pin style is very rare. There are two types of 7 way connectors.
This article will be talking hopkins 7 way trailer plug wiring diagram. 7 way plug wiring diagram standard wiring post purpose wire color tm park light green battery feed black rt right turnbrake light brown lt left turnbrake light red s trailer electric brakes blue gd ground white a accessory yellow this is the most common standard wiring scheme for rv plugs and the one used by major auto manufacturers today. Hopkins 7 way trailer plug wiring diagram hopkins 6 pin trailer connector wiring diagram hopkins 7 way trailer plug wiring diagram folks comprehend that trailer is a car comprised of quite complicated mechanics.
This automobile is designed not just to travel one place to another but also to take heavy loads. Wiring a 4 way hitch plug to a 7 way trailer is not a difficult thing to do but it will not power all the circuits that are connected when the trailer is plugged in to a vehicle with a 7 pole connector. Basically it is another 12v circuit typically used for a reverse light reverse lockout for trailer brakes.
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