Editing Forums/Z31P/z31-repairs-forums electronics/Fixing a horrible mess

{{ForumImport
|op_user=Serialsam38
|op_date=2019-02-16 15:33:56
|post_count=4
|archive_url=/Z31performance_archive/forum/z31-repairs-forums/electronics/542450-fixing-a-horrible-mess.html
}}

'''Serialsam38:''' <small>(2019-02-16 15:33:56)</small>

Hi guys,

Yes I am a newbie so far me and my '86 300zx N/A Have done fine. I picked it up for $600. Just drove it 900 miles. My problem is this it has a digital dash in it does not work. When I took the dash out low and behold a speedo cable was there and it is connected. I think they tried to convert it to digital and never got around to it. My absolute question is what harness do i get to go back to analog?

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'''FrozenZ:''' <small>(2019-02-16 16:45:12)</small>

when you say "it does not work" do you mean nothing on it works or just the speedo doesn't work?

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'''Serialsam38:''' <small>(2019-02-16 17:03:13)</small>

Speedo, Fuel Gauge, Tachometer. Only the warning lamps work. I looked up the power supply awhile back and it wasnt there so i bought one thinking O easy fix. Not its missing one side of the harness and I tore the whole dash apart looking for it.

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'''FrozenZ:''' <small>(2019-02-17 13:34:30)</small>

Okay, yep, sounds like you're on the right track. Afraid I don't have much advice besides that there have been a few threads here over the years about conversion back and forth, just start searching…