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Old 02-01-2009, 09:10 PM   #1
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im working on a parallel installation of a ms1 on a 96 and i have a question on the wiring. On braineack's writeup he shows wiring going to the ms connector such as pin 29 and i was wondering where those are supposed to go causse they dont show up on the ecu pinout. Thank you
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Old 02-01-2009, 09:23 PM   #2
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MS has a DB 37 connector. 37 pins, labeled 1-37. That's where those numbers come from.
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Old 02-01-2009, 10:17 PM   #3
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i know that... its printed on the connector. Maybe i wasnt clear enough. I see some wiring on the writeup that doesnt have a place to go on his printout on the ecu. Pin 29 was an example of one of em.
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Old 02-01-2009, 10:22 PM   #4
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Probably not used. Or you can set it to be an output to something. More info on wiring here:

Assembly Guide - MegaSquirt<sup></sup> V3.0 Main Board

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Old 02-01-2009, 11:12 PM   #5
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The pic of the DB37 on Brainey's writeup is just a generic pic from the MegaSquirt FAQ. It's not Miata-specific. You need to familiarize yourself with the function of all these wires so you know what you're hooking up. Check out the last page of the 3.0 schematic: V3 Main Board

From this, we see that pin 29 is "IAC2A", a fairly generic pin that just deadends at a pad inside the MS. So unless you've internally connected a mod to pad IAC2A, this pin does nothing and goes nowhere.
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