https://dev.z31library.com/index.php?action=history&feed=atom&title=Forums%2FZ31P%2Fz31-repairs-forums_electronics%2FDigital_dash_testing 2026-08-15T10:09:22Z Revision history for this page on the wiki MediaWiki 1.43.8 https://dev.z31library.com/index.php?title=Forums/Z31P/z31-repairs-forums_electronics/Digital_dash_testing&diff=5805&oldid=prev 2026-05-15T05:15:34Z

<p>Forum archive import (z31performance)</p> <p><b>New page</b></p><div>{{ForumImport<br /> |op_user=707Redz31<br /> |op_date=2015-03-08 00:41:50<br /> |post_count=5<br /> |archive_url=/Z31performance_archive/forum/z31-repairs-forums/electronics/24811-digital-dash-testing.html<br /> }}<br /> <br /> &#039;&#039;&#039;707Redz31:&#039;&#039;&#039; &lt;small&gt;(2015-03-08 00:41:50)&lt;/small&gt;<br /> <br /> I&#039;m trying to get the digital dash to work on my 86T. I have TWO known good power supplies, I tested power from the dash harness, to the display&#039;s little harness, out of the display harness into the power supply, and out of the power supply. The original dash display would only light up a couple cells and flicker when they did. I got another display used from someone and this one all the dummy lights will work but none of the cells light up at all. Won&#039;t even try.<br /> <br /> The &quot;new&quot; display is an 84T. The wiring diagram I have shows 84&amp;86 digital to be the same.<br /> <br /> Any ideas?<br /> <br /> ----<br /> &#039;&#039;&#039;reddzx:&#039;&#039;&#039; &lt;small&gt;(2015-03-08 00:47:18)&lt;/small&gt;<br /> <br /> wiring harness connectors<br /> <br /> ----<br /> &#039;&#039;&#039;707Redz31:&#039;&#039;&#039; &lt;small&gt;(2015-03-09 00:01:39)&lt;/small&gt;<br /> <br /> Not a bad suggestion. I&#039;ve messed with them a little bit moving them around while plugged in and it still doesn&#039;t do anything. I&#039;ll double check that them though.<br /> <br /> ----<br /> &#039;&#039;&#039;NissanEgg:&#039;&#039;&#039; &lt;small&gt;(2015-03-09 02:50:39)&lt;/small&gt;<br /> <br /> Go over all circuit board connections on the power supply &#039;&#039;&#039;&#039;&#039;AND&#039;&#039;&#039;&#039;&#039; the clusters and check for bad solder connections. Common culprit. Also check the cluster for bad &quot;looking&quot; components on the circuit boards.<br /> <br /> ----<br /> &#039;&#039;&#039;707Redz31:&#039;&#039;&#039; &lt;small&gt;(2015-03-23 17:12:42)&lt;/small&gt;<br /> <br /> I did that in both power supplies. They are 100% good. None of this can be power supply I&#039;ve proven them. I have checked the cluster for fugly components and found none. I will go over the internal cluster connections next.</div>

z31p_707Redz31