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Led voltage gauge |
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13-01-2018, 06:38 AM
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Join Date: Dec 2017
Location: Christchurch, NZ
Posts: 69
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Led voltage gauge
Hey guys finally got my led voltage gauge in the poSt today.
I bought it too give me live/quick view at both my main and aux battery just as easy way to check that nothing is wrong with the battery's. And for when I get lights that the batteries havnt just fully been flogged from the spotties etc
Only question is should I use 10amp or speaker wire to hook them up and also how much current will the gauge draw when hooked directly to the batteries? Enough to worry or not really?
It's my daily so will get used a fair amount.
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2011 2.5ltd dble cab d22
Mcc bullbar, Mcc rear bar, sherpa 4x4 snorkel, gme uhf, egr blank off, 6.5 front and 6x9 rear speakers,2inch efs lift
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13-01-2018, 08:43 AM
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Join Date: Apr 2014
Location: Sunshine Coast
Posts: 1,425
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just use norml 12 volt auto wire and if your going direct from battery you could include an on / off switch so theres no power to the new gauge when your not in the car. otherwise wire direct to the ignition fuse box plug so the gauge only comes on when ignition is on. the digi gauges draw bugger all power.
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13-01-2018, 09:19 AM
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Join Date: Oct 2009
Location: Mid Coast Region, NSW, Australia
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As above.
Because the gauge doesn't draw a lot of power, even very thin wire will be satisfactory. You could even just draw from one of the feeds in the cabin under the dash, like the stereo feed - this will be close enough to battery voltage anyway, and has the dual advantage of coming on only when ignition is on, and not requiring you to poke anything through the firewall.
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13-01-2018, 10:42 AM
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Join Date: Dec 2017
Location: Christchurch, NZ
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Hey guys thanks for the replys, i might just put in a switch in as i'll only be able to get the battery voltage for the main battery if i tap a ign or acc source.
ill post some photos of the final product tomorrow hopefully
__________________
2011 2.5ltd dble cab d22
Mcc bullbar, Mcc rear bar, sherpa 4x4 snorkel, gme uhf, egr blank off, 6.5 front and 6x9 rear speakers,2inch efs lift
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13-01-2018, 01:44 PM
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Member
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Join Date: Apr 2016
Location: South Australia
Posts: 264
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The current draw may be low for a voltage gauge but there is still volt drop across any length of cable
Since you're trying to actively monitor tiny .1 of a volt increments from a super low voltage 12 volt system, you really want to use the biggest cable practicable, rather than just whatever
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