Hey all -

I know one key problem the 3rd gen has when it comes to the wiring harness are the various electrical connectors under the hood - they get broken and brittle, and it's damn near impossible to find good ones.

But, I hope to remedy that .

Talked to Richard at autosportwiring.com - he's making ECU harness adapters for a number of cars. This is basically a short straight-through harness that goes between the ECU and the stock wiring harness. If you've got electronics that need to tap into the harness (boost controllers, rev/speed computers, etc.) you can tap into the extension harness and leave your stock harness unaltered. Also, you can comfortably do the work at a table, instead of curled up under the dash.

He has a 3rd gen application for the harness, BTW. $179 for it, and it's top grade wiring and the OEM connectors, all brand new.
http://www.autosportwiring.com/pages/1/index.htm

Anyhow, I've been talking with Richard, and mentioned the lack of a good source for electrical connectors. He believes that he can get most any connector needed. They would be raw connectors - the shells and pins, or I guess he could pre-assemble them with a short pigtail. This would also be very useful for you standalone guys that still use some of the stock sensors - you could crimp the right connector onto your new harness, and not have to splice into a piece chopped off the stock harness.

So, I need a list of what connectors you guys think would be most wanted. I would imagine stock fuel injector connectors, ISC connectors....what other connectors do you think?

Once we round up what connectors we would like to see available, I need pics of the connectors for him to source the right one.

I have NO idea on pricing - depends on what kind of minimum quantity he would have to order, cost of the connector, etc. But, I think prices should be very reasonable.

Thanks,
Dale

 

thermosenser
water temp
primary injectors
bosch plugs for 2nd
CAS
2nd water temp
o2 sensor
air temp

 

Add one with the miata thermoswitch connector instead of the FD one.

 

If you need Bosch-style square plug fuel injector connectors for aftermarket injectors -

http://store.summitracing.com/partde...N=120%20303595

Pack of 8 shells with the terminals for $15.99. They're nice, too - I got them when building up my TII, they're weathertight, have the metal release clip, etc. You do have to know how to crimp a connector, but that's not too hard.

Keep the list coming! Also, if you are handy to a camera, snap some pics of connectors you need replacements from and post them up.

Thanks,
Dale

 

He ought to just sell an aftermarket replacement harness for the whole kit and kaboodle... he could probably sell it for much less than the .. what?.. $600-$1000 Mazda charges... with the age of these cars, we could probably all use one.

Or better yet, someone help him figure out how to set up a replacement harness to allow you to run the '99 solonoid/vaccuum block with a U.S.-spec Power FC or stock ECU.

 

Building a replacement harness would be VERY tricky and costly. Having totally re-constructed my '88 TII's harness, I came to appreciate the work Mazda put into it.

Also, a harness that looks crispy and crappy many times isn't - a lot of times it's the outer layers of insulation that take the bulk of the damage. Spending a little time re-wrapping the harness and replacing any damaged wires would do the trick.

I'll have to do a writeup sometime on re-wrapping harnesses.

Dale

 

Where were you when I needed you!!!!!

https://www.rx7club.com/showthread.p...hreadid=311890

 

Its not that hard

 

ok and has this gone anywhere?

 

just an fyi, the company i work for is the world leader in terminal and connector manufacturing. it's possible that they could be of some assistance. www.samtec.com

 

email I recieved...


Hi Eric,

There is no easy reference to go to, to identify those connectors. Which engine connectors are you looking for? If you could provide a clear image of the front side of each connector, I will try to identify it and see if it is available. An image from the Mazda wiring manual will probably show the detail I need.

As a general rule I don’t sell the ecu connectors separately. Why do you need those alone?

Regards,



Richard A. Welch
AutoSport Wiring
P.O. Box 93141
Southlake, Texas 76092
011-817-707-9371
www.autosportwiring.com

 

The thread really hasn't gone anywhere, so I hadn't done much with this .

If you guys could get pics of connectors you need and we can pass them on to Richard, we can get the ball rolling. I'm about a month or two out from having my FD, so I can't easily snap pictures of electrical connectors .

I do have spare '89-91 FC fuel injector connectors in the garage, and I'm gonna get some pics of those - the FD uses the same connectors.

Dale

 

Won't these fit the stock square plug connectors from s4 FC's? Everyone one of mine is cracked and I'm having a heck of a time finding replacements for the stock injectors!

 

Yep, that will work on FC stock injectors. Been there, done that - I used those on my old TurboII.

Dale

 

I would like a complete set of oem connectors so I can make a real wiring harness out of good quality aircraft wire (tefzel) just let me know the price...I could make up a harness board and make a bunch of them.

Tom

 

Contact the guy at the Autosport Wiring site - I don't have access to the connectors. If you could make an aftermarket FD harness, you'd be in the money .

Dale

 

i would be interested too complete stock connectors. I wonder why he doesnt want to sell the ecu connector seperate.

 

What about the fuel injector type connectors, but with offset index pins, like the ones for the BAC and the water temperature switch? Is there a good source for those yet? I know I found them while I was looking for the stock FC fuel injector connectors, but not since.

 

I'd love to buy a complete set of underhood& ecu connectors and pins so when the time comes I can make a new harness or easily make any repairs in the future.

Tom

 

I'm doing mine now, and it's a beating. :P I spent 2 hours last night running new lines and connectors for all four injectors. Mr. DaleClark, what kind of wire did you use for the O2 sensor and does it work fine? The stock one seems to be some kind of scrawny shielded coaxial cable.

 

I've been through my old FC's harness, but never worked on an FD harness.

The O2 sensor wire doesn't have to be that beefy - remember, it's a VERY low voltage signal, less than 1v, so it doesn't need a large gauge wire. The shielding is necessary to prevent noise from distorting the low voltage signal.

Some connectors you can just grab off of other Mazdas in the junkyard. I got a set of fuel injector connectors that worked and looked like new off a Miata in the junkyard once. Most of the FD's connectors aren't FD-specific.

Dale

 

That's not a bad idea - the harness I'm rebuilding is for an FC also. Now I've got to find a shielded wire for the o2 sensor. :P It was weird, too, when I rang the original o2 sensor wire out, it rang out on three pins of the ECU connector, so I'm suspecting a short. Hopefully this will solve my 3800 RPM hesitation and lot of the other driveability issues I've been having.

 

anyone ever had luck gettin the fd connectors from these guys?