 | Home > In Car Electronics > Ignition live |
 
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| MartinK Member Since: 02 Mar 2011 Location: Silverdale (Lancashire/Cumbria Border) Posts: 2665   
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I would suggest the radio (that's what I have) or the cigarette lighter... You'll need a relay (depending of load you are connecting) of course Defender "Puma" 2.4 110 County Utility (possibly the last of the 2.4's)
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11th Oct 2023 6:29am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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As above. What are you planning on fitting that needs an Ign. Live? and where are you fitting it, cabin, engine bay??
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11th Oct 2023 7:45am |
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| MartinK Member Since: 02 Mar 2011 Location: Silverdale (Lancashire/Cumbria Border) Posts: 2665
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I did consider something like a Healtech Thunderbox. Used a lot in other applications. Basically it cuts off at ~12.5v, but switches on when the vehicle is making enough power for "charging" (about 14v I assume).
https://www.healtech-electronics.com/products/tb/ Also if you have CANBUS or similar it's less likely to cause a fault... Defender "Puma" 2.4 110 County Utility (possibly the last of the 2.4's) |
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11th Oct 2023 9:57am |
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| west4x4 Member Since: 23 Jan 2010 Location: Rutland Posts: 140
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Heated screen and seats is the plan plus a feed to a 13 pin tow socket
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13th Oct 2023 7:37pm |
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| Mossberg Member Since: 29 Feb 2020 Location: Lancs Posts: 553 
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I am no electrician but looking at your requirements perhaps a separate fuse box fed via a relay may be an option as I could see that lot taking quite a lot of amps.
I think this will need to be done right or you could create quite a dangerous situation (thinking wiring fire here). |
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13th Oct 2023 8:08pm |
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| west4x4 Member Since: 23 Jan 2010 Location: Rutland Posts: 140
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Yes wanting the ignition live to switch a relay to the seats/screen. The same would work for the feed to the trailer. Just wanting to pick up a source that’s not piggybacking off something else
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13th Oct 2023 8:16pm |
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| NickMc Member Since: 01 Oct 2014 Location: Norn Iron Posts: 1624  
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I’d fit a separate fuse box or buy the correct kit off https://www.mobilecentre.co.uk/
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13th Oct 2023 9:19pm |
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| DC101 Member Since: 01 Jul 2012 Location: Pudsey, West Yorkshire Posts: 260 
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Apologies. Hope I’m not hijacking this thread, but considering doing something similar, so thought it the best place to post.
I want to take power off the main battery, but only when ignition is live. To charge a portable power bank. Am I thinking along the right lines:- Wire from ignition live (‘lighter’ socket) to a relay in battery box Power from battery to relay; Lead from relay to fuse box to power outlet. Any relay suggestions - no huge currrent draw. With thanks Rob Cheers Rob |
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18th Oct 2023 3:45pm |
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| DSC-off Member Since: 16 Oct 2014 Location: North East Posts: 1408 
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Hi,
It sounds like you want something similar to a split charge system I built. This was done with small voltage sensing relay, no need to pickup an ignition live. You'd probably move the relay to before the plug, so it's permanently in the landrover, not in the battery box. A switch in the ground wire of the relay would allow an over ride to turn it off when power at the socket isn't required. https://www.defender2.net/forum/topic83243...y+charging |
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18th Oct 2023 4:37pm |
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