Can a Vehicle with a Euro 7-Way Tow a Trailer with American 4-Way
Question:
Hi, I purchased the euro 7 pole to us 4 pole adapter and have no brake lights on the trailer. Is there a way to get the brake lights to work? I notice that the #6 pole on the euro side of the adapter has no wire. Is it as simple as jumping the #6 to the green and yellow terminals? I have a 2015 VW Golf and these new cars are so much more finicky about where wires are connected, I wanted to ask before I experimented. Thanks,
asked by: Paul
Expert Reply:
Does your trailer have separate brake signals from turn signals? If so, the part # 118710 isn't going to work. Is your vehicle a European model? The adapter goes from a 6-way to a 4-way so there will be two circuits that would get dropped off.
Bascially, there is no easy way to convert the European 7-Way to a US 4-Way. We do not carry any kind of adapter that you could use. You are left with 2 options. First, you would install a separate wiring harness which would be the easiest. Or, you could attempt to fabricate an adapter.
You would need to use a converter, # RM-732. The red wire on the input side would attach to the brake light wire on the vehicle wiring. The white wire grounds to the frame. The yellow wire will attach to the left turn signal wire on the vehicle. The green wire will attach to right turn signal.
The out put side only has 2 wires. Yellow, which will be combined left turn and brake, and green for combined right turn and brake. To get the running lights, attach a wire to either running light circuit on the vehicle trailer wiring, and route the other end of the wire directly to a 4-Way vehicle side connector like # 18002.
You probably will not need the whole 60 inches on the 18002 harness so clip off he excess wire as needed. The yellow and green wires on the converter out put side will match the yellow and green on the 4-Way. The running light wire you ran goes to the brown wire. Ground the white wire directly to the frame.
This should give you the function you need but it should only be used as a temporary solution. The best way to add a 4-Way US style trailer connector is to have it installed in addition to the connector you already have.
Products Referenced in This Question
4-Way Flat Trailer Connector w/ 60" Harness and Wire Taps
- Trailer Wiring
- Trailer Connectors
- Vehicle End Connector
- 0 - 5 Feet Long
- Plug and Lead
- 4 Flat
- Tekonsha
more information >
Roadmaster Brite-Lite Wiring Converter
- Tow Bar Wiring
- Splices into Vehicle Wiring
- Tail Light Converter
- Universal
- Roadmaster
more information >
Product Page this Question was Asked From
Trailer Connector Adapter for Land Rover - 7-Way, Round Pin, European Style to 4-Way Flat
- Trailer Wiring
- Wiring Adapters
- Single-Function Adapter
- 7 Round - Round
- Plug and Lead
- 4 Flat
- Tow Ready
more information >
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