i have just bought a megasquirt premade for a 93 miata off of mt.net. it all looks good but in the harness adapter there is one orange wire that is unplugged... i was wondering if this is important.... any help is much appreciated!

 

Without even clicking on the photo and enlarging it, I'd say...WBO2 input?

 

so its not needed.... its a wideband input?

 

Looking at how the wires are soldered on to that connector, I'd literally de-solder the whole thing, get some heatshrink, and redo the whole thing. The solder joints look hideous.

Looks like stock o2 wire, which is PINK for a megasquirt harness (if you buy the wires from diyautotune). where it's hooked up to, you'll have to check on the pins itself. I believe stock O2 is pin 23 on the mainboard. I would double check it just in case after seeing the condition of that connector.

Orange should be airtemp I think

WIDEBAND if you're using megasquirt should be required. get a wideband sensor and connect it to that

 

Are you colorblind?

That's a pink wire, and judging by that, and the marker on the connector that says "O2" I think it's a safe bet...

And that plug is scary. And RTFM. You def need 02 input

 

Someone suffers from protanopia colorblindness.

That's the pink o2 input.


but omfg somone butchered that harness i had made...

 

so its a o2 input... for a wideband? i plug the wideband to this?

 

Holy ****, that thing is a mess.

 

yeah im just gonna cut all the wires and desolder it and start from scratch. that way i can learn a little better. I bought this off of this forum i just forget the guys username...

 

yes and please.

 

alrighty will post pics when finished probably gonna be a couple days to teach myself about and how to solder etc..