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First off, I apologize that this is going to be a massive post.
I've slowly been going mad trying to track down connectors in hopes of being able to build a complete replacement emissions harness. I've had decent luck finding the ECU connectors and the Sumitomo 250 Armlock/Yazaki .250" CN(A) connectors that are everywhere else, but I'm kind of iffy on these (apologies for the massive file size):
These are the interconnect points between the EM harness and the F harness for the S4. As I understand it, this same style of connector shows up in the headlight switch harness, the Logicon, and possibly elsewhere under the dashboard. The strangest trait about these connectors is that they usually have a high pin count, but in an odd number. 7, 9, 11, 13, etc. in 2 rows, with the most middle column having a single pin and the release tab together. The closest match I've found are these Yazaki part numbers that seem to barely be acknowledged by Yazaki themselves that they exist. As such, I can't find them stocked by the big name distributors. It doesn't have a recognizable connector family name (site says "PA" and "070", but nothing comes up for those); it's only really identifiable by the fact that they're the only unsealed connector they made with 3.0mm wide pins.
Yazaki 7119-3170 [17 pin female terminals] Yazaki 7118-3170 [17 pin male] Yazaki 7119-3150 [15 pin female] - used on both S4 T2 and S4 NA, EM harness side to my knowledge for one of the interconnects. Appears to also be for the Logicon on its side of the harness, and the headlight switch subharness Yazaki 7118-3150 [15 pin male] - matching connector on the F harness, to both the EM harness and the Logicon Yazaki 7119-3130 [13 pin female] - used on both S4 T2 and S4 NA, EM harness side to my knowledge for one of the interconnects Yazaki 7118-3130 [13 pin male] - matching connector on the F harness (Bucking the trend, 7118-3110 and 7119-3110 are NOT the 11 pin connector: this site says it's a single pin connector) Yazaki 7119-3111 [11 pin female] Yazaki 7118-3111 [11 pin male] Yazaki 7119-3090 [9 pin female] Yazaki 7118-3090 [9 pin male] Yazaki 7119-3070 [7 pin female] - appears to be used on S4 T2s for the knock module Yazaki 7118-3070 [7 pin male] Yazaki 7119-3050 [5 pin female] Yazaki 7118-3050 [5 pin male]
I also found this distributor providing datasheets/engineering drawings on the connectors. This one in particular gave insight on how the PN/connector color system works, and the female terminal's part numbers:
7114-1050 - male pin, 14-18 AWG
7114-1055 - male pin, 20-22 AWG
Found those pins at both SMD and Nexus' sites as well.
Going off the odd number of pins and the 3mm pin width, I hazarded a check of TE's catalog and found these:
MIC is short for Multi-Interlock. Ironically, Digikey has a better record of what MIC connectors are available than TE themselves - Digikey - TE Connectivity MIC Connectors (note that in the product descriptions, plug denotes female terminals and cap denotes male terminals)
They look promising from the product drawings. I'm tempted to order samples.
What do you guys think? This is probably it? Or you guys got any other ideas? Also, if you guys also know about finding new MAF connectors, let me know as well. I've been having difficulties looking for those and the connector to the S4's injector resistor pack. Thanks
I appreciate the sentiment, clokker. One day I will prevail, but for now, I cannot stand the thought of looking at another badly made electronics distribution website.
Likewise interested in whether that grommet works out to be the right part number. That picture reminds me that I still need to track down the IAT and oxygen sensor connectors.
I was tempted to buy a new harness outright, but NA S4 harnesses are NLA and I'm swapping a T2 into an NA, so I would have had to start hacking it anyways.
When I get the chance, I can drop by with my spare grommet and see if my local dealership has one in stock to compare to.
I've already looked through Ballenger Motorsport's website. It's a great resource, but didn't help in this particular situation. They also aren't too helpful with original PNs or connector families. Trust me, I exhausted my options before I started randomly stabbing at Google Images with "unsealed 7/9/13-pin connector". RX7Club, Eastern Beaver, Ballenger Motorsports, Corsa Technic, Waytek, LMS-EFI, Wiring Specialties, Vintage Connectors, etc. This is just the weirdest connector I've had to hunt down and it doesn't really seem to be used much elsewhere.
Offset Index EV1 Connectors and Other Maybe FC Connectors
No new developments on the PA series interconnects, but I've been doing some (maybe a lot of) digging on other FC specific connectors.
One of the things that bothered me most about the FC's electrical connectors is that while EV1/Bosch/Jetronic connectors are extremely common and readily available, it's infuriatingly difficult to hunt down connectors with an offset index as seen in the 1988 year high impedance injectors, S4 BACV, and FC ECU water temperature sensor. I've been searching for them for at least 2 years now. Bosch themselves don't have it and they designed the connector family. And you know you are screwed when TE Connectivity doesn't carry it. I absolutely combed through their catalog repeatedly to find only the wrong connectors. Still, I found some promising leads; I don't have these parts on hand to verify the offset distance of these indexing tabs and confirm if these connectors will work, but have a look:
First off, do not get confused with the Nissan offset index EV1 injector connectors as seen here:
These connectors do not space the index far enough out to even look right. Eyeballing the '88 injector connectors and temperature sensor, we're looking for an offset tab with a centerline just barely further out past the centerline of the pin it's biased towards.
If you search for temperature sensor and idle control valve connectors, you'll eventually stumble on the early 80s Nissan bits:
Both of these are available from Wiring Specialties. Again, I do not have either the Nissan sensors to try jamming the Mazda plug onto nor have I ordered these plugs to jam onto my BACV/temp sensor, so I have not verified if the offset tab is correct. Visually though, they're absolutely spot on.
Their pricing is somewhat reasonable, but I am still interested in more options, so I did more digging. By checking the vehicle applications and stabbing away at random part numbers I found in a listing with a bunch of alternate part numbers that the right side offset connectors (the ones that are similar to the 88 injector and FC temp sensor connectors) has a comparable Aptiv/Delphi number thanks to the oddball LT5 from the C4 Corvette having an injector with this offset index:
*The different seal colors also correspond to different wire ODs it's compatible with. I can't remember specifically, but I think the purple seal works with 20 AWG so that's the one you should care about if you're using stock wiring.
Last edited by pzr2; Apr 17, 2019 at 06:34 AM.
Reason: Typo, yikes
By this account, the centerline of the connector has an offset distance of 3.2-3.4mm from the centerline of the tab. Again, I haven't measured anything, nor ordered connectors and tried plugging things into each other, so I've no idea if this works. But it is promising, and Aptiv/Delphi parts are usually cheap and easy to get ahold of... Until you do a rudimentary search on Mouser and Digikey, and you find it's either not carried or no-stock with forecasts of shipping out till next year. The random part number searching did yield some pigtails you can buy right now, but I prefer to use connector kits instead of splicing:
Going back to the Wiring Specialties connectors, it bothered me that I could not track down connectors that even remotely resembled them, with the bulky, rectangular terminal position locks on the back. I forget exactly what I did to look for them, but I eventually ran into a bunch of Mitsubishi forum posts about them. They're all over 2nd gen Eclipses, and when you look for who originally supplied their connectors, you'll find it's mostly MCA (Mitsubishi Cable America - go figure) and KUM. MCA was a division that got sold to another company which no longer makes automotive connectors (or at least I didn't find anything) and KUM is now... Aptiv Korea. Frustrating, since I already combed through Aptiv's main catalog and found nothing of the sort. However, it seems KUM's entire catalog got preserved, so when you dig deep enough, you'll find this:
Yes, these are the slippery little turds, finally. Only issue is that I can't find any indication that Aptiv Korea distributes their products into North America, so that's moot. However, knowing that "JFC" is the connector series name, we can do more searching until you wind up here:
JFC/MJFC is short for "Jet Fuel Control", which I find kind of hilarious. As it seems, Furukawa once supported this connector series, along with a bunch of other Mitsubishi specific connectors. Whether this means they designed it and MCA/KUM produced it or Furukawa was one of many suppliers once upon a time, I'm not sure. Either way, we're trying to find a valid supplier in the now. Several of Furukawa's connectors are available if you look around, but it's all more common applications to newer vehicles, i.e. their QLW or RFW lines. More than likely you need to special order them from an approved distributor. And what do you find in their distributor's page...
Yup, Wiring Specialties is a distributor of Furukawa products. I am absolutely willing to bet that the connectors I found on Wiring Specialties' site are Furukawa JFC/MJFC units. Or maybe not since it's Wire Specialties vs Wiring Specialties, but whatever. So while I'm stopping here for now, this is looking up.
Again, I have not verified fitment of anything. Looking at the Furukawa catalog, it says their indexing tabs are offset 3.0mms rather than the 3.2-3.4mm of the Aptiv part. I'm not yet sure of what to make of it, but perhaps that is just more reason to go order some samples sooner or later.
In other news, there were things I did order before this whole debacle and recently received. While rx7club is familiar with Eastern Beaver and the fact that they sell the Yazaki CN(A) 0.250" connectors that are so ubiquitous in FC engine bays, I ordered mine from Corsa Technic. Like Eastern Beaver, they specialize in motorcycle electronics, but they carry a bunch of connectors relevant to cars.
To be clear, the Sumitomo 250 Armlock connectors are listed as interchangeable with the Yazaki CN(A) 0.250" connectors on the Corsa Technic site. I haven't tried putting these connectors on yet, but they look and feel right from the last time I had to put together a harness from 2 mangled ones and repinned these things for a day. Corsa Technic also offers both the natural white-ish housings common in the OE FC harness as well as the black ones Eastern Beaver offers. Also of note is that I think I've seen some references to Hitachi and TE Connectivity making connectors that are compatible with these. I'll have to dig into that more later.
Last edited by pzr2; Apr 17, 2019 at 06:39 AM.
Reason: More typos, more yikes
Other things I found on Corsa Technic's site that I haven't verified yet:
Looking into Sumitomo's MT Sealed series, you'll see some connectors that look familiar. I remember seeing it elsewhere, but the application I do remember is at the ignition coils:
Also in the same family is the Nippon Denso-style injector connector that the S5 FC "oval" type uses, which incidentally is the same as the FD side feed injectors, Bosch 2200cc/ID2000 injectors, and a bunch of Denso injectors.
Next is the Sumitomo HM Sealed series. The 4 pin connector looks awfully like the CAS connector:
Lastly, the TE Connectivity Multilock 070 and Sumitomo MT Unsealed Interlocking/Yazaki 090 Unsealed connectors both remind me of the non-Yazaki PA interconnects I've seen around the FC's interior:
Something that Eastern Beaver has that Corsa Technic doesn't is this funky circular connector series called the Sumitomo DS250. It's more a hunch than anything, but they remind me of the interconnects dangling under the brake master cylinder and the connector for the idle mixture screw:
Last bit of this rambling dump I'm going to add is that while I haven't actually stared at the FC MAF connector in months, the Bosch/TE JPT and Furukawa JFC both give me the right vibes. Probably because their architecture is supposed to be identical:
Again, nothing confirmed, so order at your own risk. Or just send it and report back if they do fit.
Last edited by pzr2; Apr 17, 2019 at 06:41 AM.
Reason: Again, ouch.
Would you have a source for the 1-pin O2 connector (harness side)? Thanks!
Sadly, no. It, along with the IAT, emissions solenoid, and injector resistor pack connectors, is part of a deep, dark pit of despair that I have been trying but failing to find.
Just got paid and waffling on putting in an order. Curiosity killed the cat but nobody spoke of his purse.
In less expensive news, I just unplugged my S4 NA MAF and it looks like the JPT is the winner. IIRC the NA and T2 MAF connectors are the same. Not sure about S5, but I should have one hiding in the back of my storage.
More than willing to bet that the pins are completely different in terms of being able to depin this connector and slide on a new one.
I am incredibly touched...for two reasons.
First, you got the screen name absolutely correct.
Second, you recalled how fond I am of the Volvo relay setup.
I am not very active any longer, it's nice to be mentioned once in a while, so, thanks.
And BTW...my fan/relay are still working perfectly and I still think it's one of the easiest and most robust ways to run an efan.
Not too active on the forums but had to give my 2¢. It's threads like this that need to stay relevant, took a look into this years ago but had horrible luck. Keep up the excellent research!
I'm surprised I didn't see this thread sooner. The connector you were originally looking for should be made by KET. They are nearly impossible to source in the US. I have successfully ordered pins for these connectors from cycleterminal.com (HM .090 non-sealed terminals). They have many connectors and pins found all over japanese cars and motorcycles, including the FC.
Also the Volvo guys have already done all the hard work you spent tracking down the Yazaki 58 series Y . You can buy everything you need to get the Volvo 2-speed fan wired up. https://www.240turbo.com/blackvinyl....elaycoolingfan
While on the topic of fans, the popular Villager/Quest fan uses Yazaki 58 series X connectors. Also difficult to piece all the connectors together if you want authentic Yazaki. If you're okay with replicas, cycleterminal and Corsa both sell copies.
Replacement Connectors
. You can buy everything you need to get the Volvo 2-speed fan wired up.