trailer wiring

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Greg_M

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Dec 27, 2021
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Vancouver Island
I'd like to put a 7 way flat pin trailer receptacle (RV style) on my D1. Is there a harness that will plug into the trailer plug beneath the passenger side rear speaker with the RV style receptacle on the other end? (or just a pigtail and I can add the receptacle). Atlantic British has the four wire flat connector kit but I don't see one for the RV 7 way flat. I'd buy the YMZ500480 if I knew I could get it open to add the other 3 wires, anyone know? I'd like to avoid using an adapter from the European 7 pin round to 7 pin flat at the bumper.
Thanks,
 
LRDONE

LRDONE

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Dec 3, 2020
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At one point I spliced in a flat 4 and bought a flat 4 to tv round 7pin adapter. Worked well. I was unable to find anything to adapt to the stock European 7 pin plug.
 
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Greg_M

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Dec 27, 2021
196
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Vancouver Island
LRDONE said:
At one point I spliced in a flat 4 and bought a flat 4 to tv round 7pin adapter. Worked well. I was unable to find anything to adapt to the stock European 7 pin plug.
Click to expand...
Thanks. I was afraid this might be a goose chase. I might just try to make a 7 wire pigtail from the YMZ500480 AB sells and wire it to a barrier block so I can connect anything going forward.
 
antichrist

antichrist

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Sep 7, 2004
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I don't know what AB sells, but IMO the factory converter sucks, not well sealed at all.
I just cut off the factory end and used a Hoppy converter. I may have posted what I did here years ago. But may have been one of the other forums. Try googling antichrist + "trailer wiring"
 
LRDONE

LRDONE

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Dec 3, 2020
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I ordered that same exact adapter and it didn't fit. It's 7 pin but the connector is much larger than the factory 7 pin plug. Maybe yours will be different. I'm curious to know.
 
LRDONE

LRDONE

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Dec 3, 2020
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Greg_M said:
Yeah, that don't look good
Click to expand...
image.jpg

After a little digging, I believe the available harness that AB sells connects to #12 in the diagram. #1 in the diagram is our missing link and that harness has a part number of ANR3896 which I believe is no longer available.
 
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Greg_M

Well-known member
Dec 27, 2021
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Vancouver Island
LRDONE said:
View attachment 67233

After a little digging, I believe the available harness that AB sells connects to #12 in the diagram. #1 in the diagram is our missing link and that harness has a part number of ANR3896 which I believe is no longer available.
Click to expand...
That's great information. Wish I understood this better before ordering the pigtail but oh well. I'm hoping I don't have to cut it off as Tom has done and add a Chevy or other receptacle. But there would be little joy in making a 7 pin plug from bullet connectors and rubber.
 
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robertf

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Jan 22, 2006
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I have what I think is factory stuff in mine and it looks like #13. somehow I was able to wire tap the big weird socket that says land rover and get 4 wires that work with brake and turn on the same filament.

Ill get some pics this evening

there is a te or molex plug that you could make a new harness for then get the +12v from the single purple wire next to the trailer connector and reverse lights from the other connector under the tail light
 
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LRDONE

LRDONE

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Dec 3, 2020
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If #8 could be bought or sourced, I would cut the factory plug off the harness and pin it to #8 plug. This would allow the Atlantic British harness to work. You would end up with a flat 4 at the hitch. Then... they make a flat 4 to RV 7pin adapter for cheap. This allows you to have a flat 4 connector for small trailers and a 7 pin RV style for campers and things equipped with trailer brakes.

**Update, #8 can be sourced. Part #STC8874 That's the answer.
 
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Greg_M

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Dec 27, 2021
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Vancouver Island
Well that was easy. Had to bore and clearance the plug boot repurposed into an anti strain but otherwise was among the easiest Rover projects I've done.
Might tidy up the epoxy potting a bit but really not bad for a first go.plug1.JPG

plug2.JPG

plug3.JPG
 
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Greg_M

Well-known member
Dec 27, 2021
196
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Vancouver Island
The other end breaks out to a 12 position terminal strip (barrier bar? not sure the nomenclature) mounted on threaded inserts below the speaker. More space than I need but I had it and there's plenty of room to add a +12 vdc wire and a wire from the brake controller. Not sure where to put the brake controller yet but, baby steps.
terminalstrip.JPG
 
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robertf

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Jan 22, 2006
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looks like the control box is potted and the lucas rist connector has that rubber band seal and wire grommet seal.

i dont think the oem ones are potted
 
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