Has anyone researched and found the part #'s for the ECU wiring harness side (car side) connectors for the reverse, neutral, and the 1st/2nd gear sensors? This is for an auto to manual conversion and ideally I'd like to be able to source the proper connectors when I wire it out. The connectors pictured below are the opposite of what I'm looking for since these are the transmission side connectors.

Thanks!

1st and 2nd gear connector at transmission1st gear switch connections are the two blue wires.

2nd gear switch connections are the two green wires.

Note that what appears as a middle row is not connected to anything.



Neutral Switch connection on transmission (orange plug)


Reverse connector at transmission (whitish / grayish on one transmission, yellowish on another)

 

Those look like Sumitomo connectors. Try searching from Corsa.

https://www.corsa-technic.com/catego...category_id=54

 

Links to connectors below

 

THANK YOU THANK YOU!!!! Wow - I saw the first post this morning, and was doing my usual routine before I started searching, and now I see you've done the work for me. I'm not sure I would have ever found them on that website. And the pricing is amazing - around $3 per connector compared to the $30-50 I've seen for other pigtails when I worked other projects. I just pulled the auto transmission off yesterday, and started to tackle a relatively clean way of running all the sensors, and this is a HUGE HUGE HUGE help. God bless our forum.

 

You are most welcome. I also utilize the same approach by using oem connectors only when working on cars.

Over the years, I've spent a good amount of time researching connectors on the FD3S chassis to either restore or replace. There are also several good connector threads on this forum. Most Mazda connectors from the 90's are from Sumitomo, Tyco/AMP/TE or Yazaki.

Best of luck with your auto to manual swap!

 

I am about to order these connectors and noticed that pin/wire size and insulation/seal size options need to be selected on the Corsa site. The options are 6-20 or 20-24 AWG and 1.4-2.4mm or 2-2.6mm, respectively.

Any idea which options apply to our cars?

 

They're pretty cheap aren't they? If you don't hear you might just order the gamut of them and work it out.

 

Cheap, yes - but I just noticed that several of the connectors have three wire and insulation size options - giving a total of 9 possibilities (3^2) for these connectors. (Some wire sizes may preclude some insulation sizes and vice versa, though I have no clue there.) Numbers start adding up at that point!

 

You right. hopefully somebody knows.

 

Are you running new wires, or trying to reuse the existing Mazda wires? The answer to to your question depends on what gauge and type of wire you're using for those connectors. So for example, if you're using a standard 18 AWG automotive grade wire (e.g.,GXL, TXL, etc), the 16-20 AWG terminals with the 2-2.6mm seals should work fine in that example. But if you're using a mil-spec Tefzel wire that has the thinner insulation, (assuming the same 18 AWG size), you would use the 1.4-2.4mm seals instead, and the same 16-20 AWG terminals.

 

When I did the conversion I added these connectors to the existing stock wiring from the auto ECM harness and went with the 20-24 AWG and the 1.4-2.4mm. It fit great. If you're doing an auto to manual conversion, I'm writing a post detailing every cut and jumper that I did for a very clean conversion that even keeps 1st/2nd gear switches working. It's not very hard to do and I spent a lot of time researching the cleanest way to do it.

 

Thanks for the replies. I'm reusing the existing Mazda wires. Connectors have deformed from the heat so I need to replace them.

 

For reference, here is the Corsa invoice for the three (male and female) connectors. $23 shipped for the lot, which is pretty decent.