Can a 4-Way to 7-Way Adapter be Used to Install a Combined 4/7-Way Trailer Connector
Question:
Can you use a 4 pole to 7 adapter to connect to the HM40975 ?
asked by: Steve F
Expert Reply:
Using a 4-Way to 7-Way adapter such as # 37185 to install # HM40975 would create extra work and parts that you would not need. What I recommend is to use harness # PK11998. It will plug into the back of connector # HM40975 and then you just hardwire the wires.
Harness # PK11998 has the following wire colors and functions:
Red - Left Turn and Stop
White - Ground
Blue - Electric Brakes
Green - Right Turn and Stop
Black - Battery
Brown - Running Lamps
Yellow - Backup Lamps
For the 12 volt circuit (black wire) you will need to splice a length of wire to it, run it under the vehicle, and up into the engine compartment where it will connect to the positive battery terminal via a 40 amp circuit breaker # PK54540.
Similarly you will need additional wire for the blue brake output wire if you will be using a brake controller. For wire that you can use for the black and blue wires use # 10-2-1, sold by the foot. I have included some links that should help.
Products Referenced in This Question
Deka Jacketed 2 Wire, 10 Gauge, Brake Wire - per Foot
- Wiring
- Wire
- Jacketed Wire
- 2 Wire
- 10 Gauge
- Deka
more information >
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 >
4' Pigtail Wiring Harness for Pollak Replacement 7-Pole RV Socket
- Accessories and Parts
- Trailer Wiring
- Vehicle Wiring Harness
- Universal
- 7 Blade
- Pollak
more information >
Pollak Circuit Breaker - Cycling/Automatic Reset - 40 Amp - Straight Mount Bracket
- Accessories and Parts
- Wiring
- Circuit Breaker
- 40 Amp
- Pollak
more information >
Product Page this Question was Asked From
7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 7 Round - Blade
- 4 Flat
- Hopkins
more information >
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