Volvo European 7-pin to US 7-pin - Page 3 - Fiberglass RV


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Old 08-16-2015, 03:43 PM   #29
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Quote:
Originally Posted by Bob Miller View Post
Easy Peasy answer.... There are 7 pin connectors for the TV that come pre-wired with a flat 4 connector pigtail for the lights. Put the flat-4 line with it's light converter on the Volvo and plug it into the pigtail on the 7 pin and you are good to go. Just add the charging line and brakes. Looks like this one from etrailer:
Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector Tow Ready Wiring 30717
I hope everyone understands that with so many different conflicting comments and suggestions, it's becoming hard to sort this out. I'm inclined to go out to the Lil'Bigfoot, shut and lock the doors, and just begin drinking a lot of something.

Anyway. Let me try to sort out what Bob suggests. Bob, are you saying:

there is a 7-pin connector with a 4 pin connector also attached.
that this 7pin plugs into my Euro/auto 7-way?
that this provides a 7-pin connection AND the 4-way can be wired to do another job as well?
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Old 08-16-2015, 04:07 PM   #30
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there is a 7-pin connector with a 4 pin connector also attached.
Yes, it is 7 pin OUT to a trailers cord, but it also has a 4 pin IN pigtail to connect to a 4 pin (flat 4) connector thus 4 of the 7 pins are wired. Tell your guy to wire the Volvo for a 4 pin flat connector and connect that to the example I linked to.
Just, to confuse the issue, there are also 7 pin connectors with an extra 4 pin OUT included for connecting a trailer with just a 4 flat.

that this 7pin plugs into my Euro/auto 7-way?
No, the mechanic will cut off the Euro connector and splice in a converter into the end of the Volvo's cable.. The converter usually has a short cable with a 4 pin OUT flat connector already connected. That's the end for the trailer or to plug into the pigtail on the 7 pin plug.

that this provides a 7-pin connection AND the 4-way can be wired to do another job as well?
Yes, if you have a 4 pin flat connector on another trailer, all you have to do is unplug the Volvo end of the cable from the 7-pins pigtail and connect a 4 pin lead from a trailer to that. It will be the correct pin configuration and the converter is already in place.
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Old 08-16-2015, 04:14 PM   #31
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And more about the last adapter:


That looks like a std. North American 7 pin to 7 pin that has some load resistors added internally so that the trailers LED lights will work. This sometimes has to be done becaue the vehicles electronics can't recognize the much lower current flow for LED's and thinks that there are no lights and gives an error code. Here is a note from the description:


"Then it provides this new 7-way that will work with LED trailer lights. If you plug in your trailer and it has LED lights, this will actually contain, right in here they do put resisters, load resisters."
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Old 08-16-2015, 04:15 PM   #32
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Either of these sockets would change a properly set up f pin flat to the 7 pin setup. if you look att he pictures there are wires for the addition of the brake (blue) and other connections like the power and auxiliary (pin 7)



It's really not that hard!
I have had to do this on each of my VW Sportwagens. One with the adapter and no trailer module and the other with.
If your car is older than the stabilization systems then don't worry about that module.
Usually the best and most reliable is to use the powered unit, but the unpowered one I show above will work as well.
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Old 08-18-2015, 11:46 AM   #33
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here's how id do it:
1) put the brake controller in and wire it , run the brake wire to the back of the volvo
2) run the charge line to the back of the volvo (fused)
3) use this adapter for the euro plug:
4) put this plug on the volvo, connect to adapter, and the two wires run from the front- (brakes, charge):
5)plug your trailer into the new socket immediately above, go park in a campground, and enjoy

Joe
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Old 08-18-2015, 01:31 PM   #34
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Sometimes the problem is not plugging in the wires, but rather the three wire (separate brake, turn, and tail lights) to the combined brake and turn with separate tail lights.
Making the brake and turn lights work together is often the issue going from Euro to NA 4 pin or 7 pin.


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Old 08-18-2015, 01:48 PM   #35
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All that usually takes is an off-the-shelf 4 wire to 3 wire tail light converter to solve the problem. That issue, and the solution, has been with us for many years.
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Old 08-18-2015, 02:10 PM   #36
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That is correct.

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Old 08-18-2015, 03:22 PM   #37
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Who should put in the brake controller? Volvo Steve or Trailer Service Guy? I hate to turn TSG loose with the wiring in my car... at least forward of the bumper.
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Old 08-18-2015, 03:43 PM   #38
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Ask the controller maker if they have installation instructions specific to your vehicle. That way Volvo Steve can install it and run the wire to the back for the brakes as well as the feed for the charging line, then trailer guy can integrate them into the connector.
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Old 08-20-2015, 12:32 PM   #39
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My volvo is wired. I'm picking up my T@B Tuesday. Volvo put the receiver and wiring in. I'll let you know what happens. This sounds way too complicated...
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Old 08-20-2015, 01:03 PM   #40
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Quote:
Originally Posted by ORshepherd View Post
My volvo is wired. I'm picking up my T@B Tuesday. Volvo put the receiver and wiring in. I'll let you know what happens. This sounds way too complicated...
Elizabeth,

I'm keeping my fingers crossed for you (and for me)! Please report ASAP.

Does your T@B have brakes? Do you know if the plugs will match?



My hitch goes on tomorrow, and the trailer goes in for full check-up (and plug adaptions) and battery moving, etc. on Monday. Wish me luck!

Best,
LP
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Old 08-20-2015, 09:41 PM   #41
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I will ...you too!! Yes...T@bs have brakes and they're putting a break controller in. (the RV place).
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Old 08-28-2015, 01:49 PM   #42
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Did you get your Volvo setup with lights and brakes?

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