Okay so Ive been searching for about two days now and I have a plug that goes into my completely stock 1.6 1991 miata and a db37 connector that goes into my megasquirt I just need a diagram of what pins to connect to what because i cannot seem to find any diagrams other than the one on diy autotune that has labled in letter and number codes to what spot on the connector they want each wire going to. I just need diagram of what each pin on my connector that plugs into my cars harness connectors with them labeled in the way that it is described on diy autotune would be helpful aswell my megasquirt is a ms2 V3.0

Please if I have missed an obvious thread and make a fool of myself link because I am very lost as of right now

 

Check the factory workshop manual for the part showing the ECU pinout, note down what each pin does (injector one, ground, etc etc)
Put them into an excel spreadsheet with OEM pin number, and function.

Then look at the MS pinout, and do the same
Reference to two for the matching function (injector to injector, etc)


You'll end up with a sheet that shows Mazda 1B = MS 2R = "VSS in" or something like that.

 

Trubokitty.com should be very helpful for you

 

turbokitty would be a life saver but unfortunately it is for ms3

 

https://trubokitty.com/#/diypnpassembly

 

That's completely different from an MS2 V3.0.

OP, I've yet to see a story of an MS2 install without any questions or issues. There's not a simple diagram/pinout like there is for MS3/MS3x or DIYPNP. The pinout should actually be the easy part (just use the DIYPNP pinout and modify for what you have, if you can't figure that out, then learn up before continuing). MS2 requires certain internal mods which always trips people up. I don't have the answers, but I remember reading about a lot of this when doing ECU research of my own.