andy.i Posted August 13, 2009 Share Posted August 13, 2009 as title, i cant seem to get a reading on the gauge, all wired up, but do you need to earth the sensor as well? ive just got the green wire attached to it? Quote Link to post Share on other sites
Glanza_Ragger Posted August 29, 2009 Share Posted August 29, 2009 if its a mechanical gauge you only need the water line plumbed in, mechanical gauges only need live and earth to light up usually. some cheaper ones need the sensor earthed and a live too.If its a digital display you'll need live and earth on the ignition on line. Quote Link to post Share on other sites
steviet Posted August 29, 2009 Share Posted August 29, 2009 You need to earth the sensor to. Quote Link to post Share on other sites
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