V8 Miata Wiring, Electrical, and ECUs v8 conversions on a Miata can be tricky. Post your comments or questions within with regards to swap wiring and electrical.

5.0 nb wiring

Old 08-17-2014, 07:42 PM
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Default 5.0 nb wiring

I just received martins kit, however the 4 banger was sold last year, does anyone know the wiring colors for the water temp switch,and tach wire? Thanx in advanced.
Old 08-18-2014, 01:43 AM
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I'll see what I can pull up in my Haynes manuals
Old 08-18-2014, 05:41 AM
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Originally Posted by MLKNR
I'll see what I can pull up in my Haynes manuals
My haynes wiring colors don't match my wiring colors, "rats"!
Old 08-18-2014, 05:57 AM
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how about Mitchell?

http://neomiata.com/garage/index.php...ams+1997-2000/

Sometimes you have to trust the location over the color but usually these were right for me.

Last edited by charchri4; 08-18-2014 at 06:02 AM.
Old 08-18-2014, 11:33 AM
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Thanks for the quick response, i'll try Mitchell.
Old 08-19-2014, 07:09 AM
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https://onedrive.live.com/redir?resi...t=folder%2cpdf

I named both wiring diagrams "Engine Wiring 1 of 2" and "2 of 2" Hope this helps
Old 08-19-2014, 09:56 PM
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This will help immensely. Thank you much.
Old 08-23-2014, 03:02 PM
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How are you planning on running your speedometer BTW?

-Jason
Old 08-24-2014, 07:17 PM
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I hope the dakota speddo sensor will suffice.
Old 08-28-2014, 11:03 AM
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you can use a 1995 vss, they have both signal and wire on then.
Old 08-29-2014, 09:58 PM
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Wire the two VSS wires directly to the NB Miata tach?

-Jason
Old 08-29-2014, 10:45 PM
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I located the two wires of the Speedo in trans tunnle, I planned to hook those two wires to the dakota sensor of the t5, does that sound feasible? I'm a little lost.
Old 08-30-2014, 11:08 AM
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If it's was me. I take the mustang 1995 VSS and hook the signal wire to your yellow cluster wire. Both are ground signal. Then i change the gear of the speed sensor to be more accurate on need. If you use a 1994 or 1995 ECM you need to send a VSS signal to the ECM.

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