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Wiring Diagram for a 7-Way Round Pin Trailer Connector on a 40 Foot Flatbed Trailer


Wiring Diagram for a 7-Way Round Pin Trailer Connector on a 40 Foot Flatbed Trailer

Question:

I need to see a wiring schematic to wiring a 1985 40 ft flatbed trailer. I have seven pin round connector. What I need to see is where each wire goes and how it is connected to the lights on the trailer. Is there a book or easy diagram to follow?

asked by: Herbert


Expert Reply:

I do have a handy trailer wiring FAQ article that would be perfect for you. I have included a link to it. I have also included a picture that shows the typical wiring diagram of a 7-Way round pin trailer side connector. As you can see, the 7-way round pin trailer connectors do not use the typical pin functions. The round pin style connectors are typically used on heavy-duty trucks which are wired differently from typical RV or equipment style trailers. You can wire a 7-way round pin connector any way you want, you just want to make sure it matches the 7-way round pin connector on your truck.

You can also use Jacketed 7 Wire, # DW04914-1, if you need to replace the wiring on the trailer. This wire is sold in 1 foot increments.

expert reply by: Michael H


Michael H


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Products Referenced in This Question

Deka Wire - Jacketed 7-Wire - per Foot


Deka Wire - Jacketed 7-Wire - per Foot


44 reviews

DW04914-1

Price:$2.07

Product Summary:

Wiring

Accessories

12 Gauge

7 Wire

Product Specs:

Wire

Jacketed Wire


more information        


Product Page this Question was Asked From

Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector - Trailer End


Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector - Trailer End


20 reviews

PK11700

Retail:$11.54

Price:$8.99

Product Summary:

Trailer Connectors

Trailer End Connector

Product Specs:

Plug Only

7 Round


more information        






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