95 Standalone harness - Help needed - Miata Turbo Forum - Boost cars, acquire cats.

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Old 01-03-2009, 05:30 PM   #1
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Default 95 Standalone harness - Help needed

Ok, I'm inches away from being done with the construction of the whole MS gizmo. I have 3 wires left coming out of the bundle and need some help as to where they meet up on the factory end.

I am running standalone on a 95 1.8. Will be running a LC-1 WB and GM IAT sensor. I did the idle and fans mod per Braineack's instructions.

After a few failed attempts to locate an answer for my questions, I figured I would just throw them out and hope for the best at this point.

The three wires coming off the DB37 are F-IDLE (Pin 30), TPS VREF (Pin 26), and IAC1-A (Pin 27). They need homes on the factory end!

I believe the F-IDLE just meets up with the BLU/ORG wire running to the IAC valve, but want to get verification before I hook it up.

Any help with this is appreciated. TIA.
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Old 01-04-2009, 02:05 AM   #2
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On the '95 ECU harness, FIDLE will go to the blue / orange wire at 2W, TPS Vref to the green / white wire at 2K, and IAC1A (assuming that's configured internally as your second trigger input) to CMP, which is the yellow / blue wire at 2G. (the primary tach lead, pin 24, will go to CKP, the white wire at 2E.)

Also, the '95 uses an isolated ground for all of the analog sensors. This is the black / blue wire at 2D. Make sure that wire is connected to one of the MS's ground pins.
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Old 01-05-2009, 02:17 PM   #3
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Thanks, Joe! That's exactly what I was looking for.
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Old 01-05-2009, 11:24 PM   #4
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Quote:
Originally Posted by Joe Perez View Post
On the '95 ECU harness, FIDLE will go to the blue / orange wire at 2W, TPS Vref to the green / white wire at 2K, and IAC1A (assuming that's configured internally as your second trigger input) to CMP, which is the yellow / blue wire at 2G. (the primary tach lead, pin 24, will go to CKP, the white wire at 2E.)

Also, the '95 uses an isolated ground for all of the analog sensors. This is the black / blue wire at 2D. Make sure that wire is connected to one of the MS's ground pins.
OK, so I hooked up the TPS VREF at 2K, and the FIDLE at 2W, but there is already a wire labeled IAC1A at 2G. I can't even remember what that wire is for. I thought I figured it out at one point. I'll have to see if I can trace it back again. It's the wire coming off pin 27 at the DB37 connector. Anyone know what this is for?

I also double checked that there is a ground to 2D.
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Old 01-05-2009, 11:53 PM   #5
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OK, a quick check shows that pin 27 where this comes off comes from IAC1B, and there isn't anything in IAC1B yet. Now I have to double check my IAC and fans mods to make sure this is correct.
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Old 01-06-2009, 11:39 AM   #6
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Quote:
Originally Posted by Cpt_Slow View Post
OK, a quick check shows that pin 27 where this comes off comes from IAC1B, and there isn't anything in IAC1B yet. Now I have to double check my IAC and fans mods to make sure this is correct.
well where did you put the fan mod to output to?


FWIW, all the places you had questions about should be in my writeup...
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