12V trailer power
Mudding
Joined: Oct 2022
Posts: 127
Likes: 191
From: CO
To me it sounds like there might be a short somewhere. You should replace the fuse and then turn the vehicle on. If there is a short it should blow the fuse right away and a trip to the dealer service center for warranty work will be in your future. It is also possible that something that was previously plugged into the 7 pin caused the fuse to blow.
@Huc Side note for you. Your karavan does not have power pin of the 7 pin connector actually hooked up to anything. I was digging around in some of the 7 pin wiring the other day and found that the wire is just cut and loose in the bundle of wires shrinked wrapped under the tongue box. In my case I repurposed it to power my backup camera on the trailer. This way the camera isn't always drawing power from the main battery.
@Huc Side note for you. Your karavan does not have power pin of the 7 pin connector actually hooked up to anything. I was digging around in some of the 7 pin wiring the other day and found that the wire is just cut and loose in the bundle of wires shrinked wrapped under the tongue box. In my case I repurposed it to power my backup camera on the trailer. This way the camera isn't always drawing power from the main battery.
Mudding
Joined: May 2022
Posts: 208
Likes: 226
From: Colorado
@Huc Side note for you. Your karavan does not have power pin of the 7 pin connector actually hooked up to anything. I was digging around in some of the 7 pin wiring the other day and found that the wire is just cut and loose in the bundle of wires shrinked wrapped under the tongue box. In my case I repurposed it to power my backup camera on the trailer. This way the camera isn't always drawing power from the main battery.
Thanks for clarification and great tip of the camera option - might be something to add!
Overlanding
Joined: Dec 2020
Posts: 21
Likes: 7
From: Abu Dhabi, UAE
I'll take a stab but not 100% I'll be on target
In my 110x I run dedicated charge wiring for my trailer in addition to the factory installed 7 pin setup various pics posted here). I'm running 6 gauge multi-strand wire + 50amp resettable breaker + Andersen Connector from LRD battery to rear tow point. In turn I have two cables to/from the trailer. One North American standard 7 pin for lights, signals, etc. + one Andersen Connector to the trailer charging control system and Lithium batteries.
Essentially what I have is:
Sorry I can't offer much more than that guess. In my case the trailer jack is manual and I've never checked to see if the 7 pin trailer pin is putting juice to the trailer. I do know that my trailer required a dedicated Anderson plug as noted above to properly get enough juice to engage the trailer charging system when in tow. Just tossing out that I dedicated charge cable to run those types of trailer accessories might the a practical solution.
Hope that possibly helpful. With an AUS build trailer here in the US I'm a bit of a weirdo in many respects. I can confirm I like the two wire connection system (7 pin + Anderson) and find it very efficient and convenient.
In my 110x I run dedicated charge wiring for my trailer in addition to the factory installed 7 pin setup various pics posted here). I'm running 6 gauge multi-strand wire + 50amp resettable breaker + Andersen Connector from LRD battery to rear tow point. In turn I have two cables to/from the trailer. One North American standard 7 pin for lights, signals, etc. + one Andersen Connector to the trailer charging control system and Lithium batteries.
Essentially what I have is:
- Trailer 7 pin connection by Land Rover
- Andersen Connection by Owner
Sorry I can't offer much more than that guess. In my case the trailer jack is manual and I've never checked to see if the 7 pin trailer pin is putting juice to the trailer. I do know that my trailer required a dedicated Anderson plug as noted above to properly get enough juice to engage the trailer charging system when in tow. Just tossing out that I dedicated charge cable to run those types of trailer accessories might the a practical solution.
Hope that possibly helpful. With an AUS build trailer here in the US I'm a bit of a weirdo in many respects. I can confirm I like the two wire connection system (7 pin + Anderson) and find it very efficient and convenient.
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