SAE 2 Pin

SAE 2 Pin, SAE 2 Pole, SAE 2 Prong, SAE 2 Conductor, Flat 2 Wire Trailer Plug, 12 Volt DC Connector

by on Mar.07, 2015, under Availability, Terminology

An interesting aspect of this connector is that although there are many descriptive terms (2 pin, 2 pole, 2 prong, 2 conductor, 2 wire, flat trailer plug, etc.) used to describe it, there is often much uncertainty with respect to its actual identification.  The “SAE” identifies it as a product of the automotive industry (SAE = Society of Automotive Engineers), but not everyone realizes that.  Some may find their way to one manufacturer’s marketing of this connector at an auto supply store.  Hopkins Manufacturing, widely known for trailer hitch related wiring components, markets this connector with the description “2 pole flat connector” assembly and the product number 47965.  The assembly is a 12″ long extension with red and white insulated 16 AWG conductors.  This product is mass produced outside the U.S., and the quality reflects that in terms of simplicity as well as the occurrence of quality issues.

Clearly, Hopkins avoids the “SAE” designation, as the uncertainty with respect to identification serves their purposes.  Knowing the proper designation (and/or alternate descriptions) enables the searcher to cast a wider net in pursuit of not only sources but assembly variations.

Similarly, the well known producer of Battery Tenders – Deltran Corporation, also avoids using the “SAE” designation.  Deltran’s Battery Tenders include cable assemblies using SAE 2 Pin connectors.

It doesn’t end there – SAE 2 Pin connectors are also widely used for coupling to Portable Solar Chargers.  Here too, the “SAE” designation is left out of the description.  Thus, limiting the users choices in finding alternate sources (or the fabrication) of cable assemblies.

Wikipedia includes information pertinent to this connector in its description of DC connectors:

As stated, the purpose of this Blog is to provide a forum to facilitate discussion of topics pertinent to SAE 2 Pin Connectors.  We welcome our reader’s active participation in these discussions.  Please Comment your observations, questions, and experiences !!!


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2 Comments for this entry

  • Lynn Lawrence

    How can the SAE 2 Pin 12″ extention assembly be used when attempting to add an accessory circuit? By the way great blog.

    • sae2pinray

      Thank You for Your commented question! If You cut one of the referenced 12″ extension assemblies in half – resulting in (2) 6″ SAE 2 Pin “pigtails”, upon coupling them You will notice that they result in a “Junction”. That is, the Red insulated conductor leading to the exposed male pin couples to the protect female socket side of the mating connector. Thus what you have now is a “pigtailed” Junction that can be used in assembling an accessory circuit with a “disconnect” point. This provides the ability to disconnect the device for safe/secure storage, or servicing purposes. Understand that there are other circuit components (not discussed) that may be desired. For example, an integral fuse holder and fuse – installed in the Hot “+” Positive leg of the circuit as close as possible to the power source.

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