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Old 07-10-2012, 12:32 PM   #1
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four pin to seven pin on Rockwood 1940LTD

I'm planning to get a 2012 Rockwood 1940LTD tent camper. I had a hitch and wiring installed at U Haul on my 2006 Honda Odyssey. The wiring installed was a flat four pin. The wiring on the camper is a round seven pin. I got a four pin to seven pin adaptor. Are there any issues I need to be aware of with this arrangement?
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Old 07-10-2012, 12:34 PM   #2
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Tip
No you should be fine as long as it was wired correctly...........
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Old 07-10-2012, 12:53 PM   #3
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4 pin on the vehicel will not have a brake controller circuit. You need to get a 7 pin and brake controller on the vehicle.

Makes me wonder what class hitch was put on the Honda.

Ken
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Old 07-10-2012, 01:00 PM   #4
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The 3 additional wires in the 7-pin connector on the trailer are:
  • Electric trailer brakes - obviously, this one is quite important but requires that a trailer brake controller be installed in the tow vehicle. Without this, you'll have no functioning electric trailer brakes!
  • +12VDC battery charge - this supplies +12VDC to keep the trailer's battery charged. Since this battery powers the electric trailer brakes in the event of a breakaway situation, this one is kinda important as well.
  • Auxiliary - this is the center pin in the 7-pin connector and is typically used for back-up lights if the trailer is equipped with same.
Whoever installed your hitch should have asked what kind of connector is on the trailer and equipped the tow vehicle accordingly with a 7-pin Pollak-type connector.


Rusty
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Old 07-10-2012, 01:23 PM   #5
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Quote:
Originally Posted by TXiceman View Post
4 pin on the vehicel will not have a brake controller circuit. You need to get a 7 pin and brake controller on the vehicle.

Makes me wonder what class hitch was put on the Honda.

Ken
What he said...
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Old 07-10-2012, 05:29 PM   #6
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You need to be sure the hitch is made for the weight of your trailer. It should be a 2" type. The 4 to 7 will not be enough. If your getting it from a dealer they should be able to help if not you may have to go back to U Haul and have them redo it.
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Old 10-20-2012, 08:39 PM   #7
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With 13" wheels I doubt it has brakes and the only reason to have a 7 prong plug would be for charging battery and if you are on shore power that is not a big concern.
OK I was wrong with that much weight you have to have brakes but they are an OPTION but can be installed, probably. And if you are towing there should be a transmission cooler.
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Old 11-18-2012, 09:15 PM   #8
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Here are the specs I found on the 1940 LTD, nice PUP by the way
And at GVWR 2274 pounds brakes are not only required in most states but needed for safety. You need to have at least a Class 3 Hitch on your TV and a brake controller. None of this stuff breaks the bank, but it's really needed. That being said you will need a seven pin arrangement on your TV, but more than the connector you will need the Wiring and brake controller that support it.
Dick

Dry Hitch Weight
174 lbs. (79 kg)
Axle Weight
1,319 lbs. (598 kg)
Unloaded Vehicle Weight
1,493 lbs. (677 kg)
GVWR
2,274 lbs. (1,031 kg)
Cargo Carrying Capacity
762 lbs. (346 kg)
Box Size
10' (3.0 m)
Exterior Open Length
20' 1" (6.1 m)
Exterior Closed Length
14' 0" (4.3 m)
Exterior Closed Height
4' 8" (1.4 m)
Exterior Width
85" (2.2 m)

Dick
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Old 11-19-2012, 08:35 AM   #9
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I've since had a brake controller and battery charge line installed. I do have a class III hitch. My main problem was that the PUP dealer had told me that the PUP did not have electronic brakes, but then when I showed up to pick up the PUP was told I needed a brake controller that the dealer had to install before I could tow the trailer -- I'm now buying the PUP from a different dealer!
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Old 11-19-2012, 09:20 AM   #10
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Quote:
Originally Posted by Tippriver View Post
I've since had a brake controller and battery charge line installed. I do have a class III hitch. My main problem was that the PUP dealer had told me that the PUP did not have electronic brakes, but then when I showed up to pick up the PUP was told I needed a brake controller that the dealer had to install before I could tow the trailer -- I'm now buying the PUP from a different dealer!
Sounds to me like going to a different dealer was as good a choice as the selection of the PUP. You did good on both choices.

Dick
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