Difference Between 4-Pole to 7-way Wiring Adapters 47180 and 37185
Question:
Hopkins shows a 47185 but no 37185 as referenced in your answer. etrailer does show part number 37185. they look to be the same piece.
asked by: Kenny C
Expert Reply:
Hopkins part # HM47180 is a 4-pole-to-7-way wiring adapter that is equivalent to the similar # 37185. 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. The 7-way can be wired, if desired, to add new functions by using the included pigtail leads. The usual additional circuits carried on a 7-way that are not carried on a 4-pole are 12V auxiliary trailer power, trailer braking power and reverse lights.
The linked article shows you all types of trailer wiring formats.
Products Referenced in This Question
Adapter 4-Pole to 7-Pole and 4-Pole
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 4 Flat
- Plug and Lead
- 4 Flat
- 7 Round - Blade
- Hopkins
more information >
Product Page this Question was Asked From
Hopkins Endurance Multi-Tow 4-Way Flat to 7-Way RV Trailer Adapter w/ 4-Way Vehicle End Plug
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 4 Flat
- Plug and Lead
- 4 Flat
- 7 Round - Blade
- Hopkins
more information >
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Samuel B.
6/8/2020
I'm planning to buy a Jayco Hummingbird travel trailer but my 2015 Honda Pilot EX-L is not equipped with a towing harness. Can you please advise me on what is the most appropriate towing harness that I need to purchase and install? Thank you.