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andygts



Member Since: 16 May 2015
Location: Yorkshire
Posts: 348

United Kingdom 
factory fitted tow socket charging a battery on a trailer

I've got a 12v battery fitted to my ifor williams to power it's hydraulic tipping motor and a winch.

I keep having to charge the battery but figured the car has the switched 'fridge' and seperate permenant 12v feed on the electrics to charge it.

What I can't find is any oem info on the protection etc, if wired up I'd obviously charge by the fridge wire as it is switched.

My question is, is it ignition switched or does it come live when the car is opened like most other things?

If it does go live when the car wakes up I don't want to be sat with the boot open loading a car with the winch and the power on the trailer starts to drop and then the car battery being drained leaving me stranded. Current
2017 Range Rover Sport SVR
2001 Porsche 911 Turbo
_____________________________________
Previous
2013 Range Rover Autobiography SDV8
2007 Range Rover Vogue SE TDV8
2002 Range Rover HSE TD6
+ Many other non LR products

Post #691607 30th Apr 2024 2:09pm
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garyRR



Member Since: 13 Mar 2021
Location: Hampshire
Posts: 1461

United Kingdom 

I have my fridge line wired to charge a battery and it only does it with the ignition on. Ignition off / doors open, it is off. 2015 Range Rover Autobiography 4.4 SDV8

Post #691640 30th Apr 2024 10:28pm
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AndyRoo



Member Since: 06 Dec 2023
Location: Gloucester
Posts: 532

Scotland 2012 Range Rover Westminster TDV8 Fuji White

Hi, it depends how you've wired it, you have both options with a 13 pin switched or unswitched.



As for the onboard wiring this is probably your best bet https://www.fullfatrr.com/forum/post499500.html

This guide is for the L322 but I assume the 405 is probably very similar. Fuji White / Jet 2012 4.4 TDV8 Westminster

Post #691678 1st May 2024 11:56am
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Fifth Horseman



Member Since: 04 Jul 2016
Location: Lanarkshire
Posts: 217

Scotland 2018 Range Rover Vogue SE SDV8 Carpathian Grey

The "fridge" supply is enabled by a relay marked "engine run", so hopefully no chance of draining the vehicle battery and leaving you stranded, protected by a 15A fuse in the rear fuse box

The "battery" supply is direct to the main battery via a 15A fuse so useful as a way to charge the vehicle with all doors closed and locked.

Post #691731 2nd May 2024 7:42am
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andygts



Member Since: 16 May 2015
Location: Yorkshire
Posts: 348

United Kingdom 

Thumbs Up I shall wire it up. Current
2017 Range Rover Sport SVR
2001 Porsche 911 Turbo
_____________________________________
Previous
2013 Range Rover Autobiography SDV8
2007 Range Rover Vogue SE TDV8
2002 Range Rover HSE TD6
+ Many other non LR products

Post #691797 2nd May 2024 8:33pm
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