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Author Topic: Hi chaps, New here, and I have a towbar related question  (Read 3048 times)

Offline ThomasZA

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Hi chaps, New here, and I have a towbar related question
« on: April 17, 2016, 12:28:22 pm »
Hi all,

As I said, new on the board. Name is Thomas, living in the Netherlands and driving a 2002 Galaxy 2.3.

We use the galaxy to tow our caravan, and we're preparing for our second trip to Sweden and Norway. (Last year we did the trip with a Land Rover with rooftop tent. I loved it, but the wife less so). We'll be towing the caravan and this is the reason for my question. I'd like to have a switched 12V supply on my car's tow bar, and have the 13 pin Jaeger aka EU plug. The caravan's fridge can be powered by the car's 12v supply, but it can drain a battery in a couple of hours, and I know I'll forget to disconnect the caravan's electrics when I stop or reconnect when I drive off again.

Has anyone done this, and if so, would you be so kind as to give me a couple of hints? I'm not afraid of DIY, and have quite a bit of experience of getting my hand dirty working on cars. I have searched the forum, but have not found anything related to my question.

I am considering running two wires from the battery to under my seat, and use an intelligent charging relay to charge a second battery (still unsure as to where to locate it), and power the caravan as well as the 12V socket in the boot from the second battery, but this is a lot of effort, and not exactly cheap.

Cheers,

Thomas

Offline Chrispb

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Re: Hi chaps, New here, and I have a towbar related question
« Reply #1 on: April 17, 2016, 01:01:12 pm »
Hello Thomas and  welcome5

When I towed a van many moons ago (not with a Galaxy) I set up a relay on the car to power the fridge when on the move so as soon as you switch of the engine the supply to the fridge is cut.
2016 Vauxhall Insignia Elite Nav in White 2.0CDTI Manual.
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Offline ThomasZA

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Re: Hi chaps, New here, and I have a towbar related question
« Reply #2 on: April 17, 2016, 02:43:35 pm »

When I towed a van many moons ago (not with a Galaxy) I set up a relay on the car to power the fridge when on the move so as soon as you switch of the engine the supply to the fridge is cut.
Hi Chris,

Also had that idea, can you recall where you picked up the signal to switch the relay?

Cheers,

Thomas

Offline Chrispb

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Re: Hi chaps, New here, and I have a towbar related question
« Reply #3 on: April 17, 2016, 03:59:03 pm »
The back of the ignition switch will be an ideal place
2016 Vauxhall Insignia Elite Nav in White 2.0CDTI Manual.
2009 Kia Sedona GS In Black 2.9CRDI 183PS. 5 Speed Manual WAV.
2003 MK2 Galaxy Ghia In Solid Black 1.9 TDI 115PS. 5 Speed Automatic.

Upgraded Eberspaecher booster heater  to independent heating with 7 day timer.

With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me.
All for a pint of Strongbow.

The FordMPV.com Forum - The free forum for questions and answers relating to the Ford Galaxy, S-Max and C-Max

Offline bestfc01

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Re: Hi chaps, New here, and I have a towbar related question
« Reply #4 on: April 18, 2016, 09:04:06 am »
Depending out the output you require, you could relay this from the car stereo.

I cant remember the exact wire off the top of my head but i'm pretty positive its the brown and red.

I've done this for my in car DVR as the ford cig lighters do not switch off with the ignition.
I've simply wired the mains to the ignition wire on the stereo loom and the neutral to the cig lighters neutral. This is using a new cig light mounted in the glove box.
However, i have a 15 amp inline fuse to ensure the circuit brake at the fuse near the new cig lighter before getting to the stereo.

I would note that the in car dvr is 12v's, but has very little draw. Not sure what the draw would be on the fridge / converter, but as Chrispb said if you create a relay, you can use this wire as the ignition switch.
Looping off its extremely simple and i've use the below to do this.

4265-0



« Last Edit: April 18, 2016, 09:14:24 am by bestfc01 »

Offline johnnyroper

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Re: Hi chaps, New here, and I have a towbar related question
« Reply #5 on: April 18, 2016, 10:44:31 am »
whilst scotch locks are quick and easy I would not advise on using them as they have very little contact area with the copper core,they also allow moisture etc to cause corrosion. Ideally you should solder and heat shrink wiring for a permanent job.

Offline bestfc01

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Re: Hi chaps, New here, and I have a towbar related question
« Reply #6 on: April 18, 2016, 11:41:41 am »
Hi Johnnyroper

Good point. I never thought of it like that.

Might have to re-do my cig ligher and my trailer electrics.

Any recommendations on soldering and heat shrink? My soldering skills are pritty poor.

Offline johnnyroper

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Re: Hi chaps, New here, and I have a towbar related question
« Reply #7 on: April 18, 2016, 01:51:06 pm »
It's well worth the doing with solder when you get chance.

 just take your time have the heat shrink over the wire ready. Tin the wires first basically that is apply solder to each wire and then join them up,this ensures a nice strong solder.

Offline SirDavidAlhambra

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Re: Hi chaps, New here, and I have a towbar related question
« Reply #8 on: June 15, 2019, 11:11:35 am »
Sounds like a lot of effort, just to keep a fridge running while you’re on the road for a few hours. Could you just stick a few ice packs in there before you set off instead?
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all.

Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

 

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