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nick345345



Member Since: 05 Dec 2016
Location: Dunbar
Posts: 71

Scotland 2012 Defender 110 Puma 2.2 USW Baltic Blue
Changed stereo - now battery goes flat!
Hi all,

I recently swapped the original stereo in my 2012 TDCI for a JVC KD-X561DBT and updated all the speakers to Focals. I thought it would be a simple swap, and all seemed to be going well, until I realised that the battery now goes flat after 3-4 days of not using it. I didn't change anything else at the time, I didn't do anything complex, just unplugged old stereo & speakers, plugged in new ones.

Anyone experienced similar and could point me in the right direction to investigate?

thanks

Nick
Post #947485 30th Mar 2022 8:17am
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2299

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Back in the day when I was more car audio inspired I recall this was an issue with the switched and permanent lives.

The red and yellow wires at the back of the unit should be on bullet connectors, swap them over so it is red to yellow and yellow to red.

Try this and see if the battery remains charged. Also test to see whether the memory still remains after you switch it off and on again (check that the unit does not lose its saved radio stations etc) > 110 XS Double Cab
Post #947490 30th Mar 2022 8:39am
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20355

United Kingdom 
As Hank says, this is most likely the issue.

What is happening now is your head unit is getting ignition supply in permanently from battery when it should only be with ignition on and permanent live is only on with ignition which likely means your HU memory is erased all the time. $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪
Post #947538 30th Mar 2022 4:56pm
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macfrank



Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 1076

Germany 2015 Defender 110 Puma 2.2 SW Keswick Green
Could well be the case. I'm happy with my old (as in tape-player-old Smile ) Sony unit. I wired it to permanent live to use it without the ignition key (it's a nuisance in a camper). Only uses a few mA on standby.
Post #947550 30th Mar 2022 7:01pm
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nick345345



Member Since: 05 Dec 2016
Location: Dunbar
Posts: 71

Scotland 2012 Defender 110 Puma 2.2 USW Baltic Blue
Hi all, thanks for the suggestions - I'll take a look tomorrow in the day light. I think I remember that there was just a single big plug thing, (an ISO connector?) that I couldn't get wrong!
Post #947556 30th Mar 2022 7:21pm
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west4x4



Member Since: 23 Jan 2010
Location: Rutland
Posts: 140

United Kingdom 
I’ve just had same issue. Be wiring further down past the iso plug. In my case both sources were connected to a permanent live.
Post #952589 15th May 2022 11:55am
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west4x4



Member Since: 23 Jan 2010
Location: Rutland
Posts: 140

United Kingdom 
I’ve just had same issue. Be wiring further down past the iso plug. In my case both sources were connected to a permanent live.
Post #952590 15th May 2022 11:57am
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3414

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
My then girlfriends car had the radio 'professionally' installed. They also swapped the red and yellow wires, but the only downside was that the memory was lost on every ignition off/on cycle. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #952592 15th May 2022 12:20pm
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