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The next branch takes us in the opposite direction of the OMP branch.
Connector B2-19, 2 position female, black, stock white, Bypass Air Control Valve
This appears to be a Sumitomo of some type, but with a different keyway than others. There is an injector connector that works, but this is the exact match. Purchased as a kit from Ballenger Motorsports. They have it pictured in green, but I have purchased twice, and received black each time.
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In the replacement connectors thread you mentioned you bought the BAC connector from Corsa Technic....Do you have the part no. for that from them? is it MT-2S-5? thanks
MT-2S-5 is an injector connector that looks very similar. If I wrote that I got the BAC connector from Corsa-Technic, then I mis-typed. I have only found that one at Ballenger.
Ok thanks. Shipping is retarded these days so trying to order from one place. Another question is that the injector drivers for the S5 on a junk S5-turbo harness I have(don't know what mine has as haven't taken the intake off yet) looks like corsa technic sumitomo DL90-2-S2 but you used the sumitomo MT-2S-4. Hard to tell form the angle on the pictures but the tabs on both look roughly in the same place for both DL and MT connectors. The pin part no.s are different from the the DL and MT series but I'm guessing they are both compatable with the denso s5 oval injectors in mating shape and pin size?
So, since this got bumped, I realized I never updated the thread. There is no finished picture of the harness because as I took it off the board, it wasn't yet complete. I finished final cutting and termination on the engine as I was assembling it. I did however have a good list of the amount of wire I used and I appear to have lost that.
The harness threw one final challenge at me that had me nearly on the garage floor in the fetal position, but I was able to fix it quite easily. The emissions harness had a nasty little surprise for me that I never noticed until I started doing some continuity tests. There are two sets of black/white wires in the harness. One comes from the ECU and one from X-10 or X-11, can't remember which. One of them is ground and one is +12V. I ended up crossing these at some point and had to run a few new wires. What an excellent choice to have the same color wire run both +12V and ground in different sections.
In the end, I estimate you could duplicate the stock harness for probably $300 in wire and another $250 in connectors and terminals. Some terminals are still incredibly tricky to track down (S5 AFM and knock connectors). Then it's a question of how do you wrap it? Tessa tape is quite cheap. Raychem DR-25 is not. Expandable braided sleeve is in the middle. It's a choose your own adventure and do what is right for your budget and build. Honestly, the most challenging part of this is becoming confident enough in your crimps. The rest is tedious tracking and double checking that things are going where you want them to (like the correct black/white wires).
Ok thanks. Shipping is retarded these days so trying to order from one place. Another question is that the injector drivers for the S5 on a junk S5-turbo harness I have(don't know what mine has as haven't taken the intake off yet) looks like corsa technic sumitomo DL90-2-S2 but you used the sumitomo MT-2S-4. Hard to tell form the angle on the pictures but the tabs on both look roughly in the same place for both DL and MT connectors. The pin part no.s are different from the the DL and MT series but I'm guessing they are both compatable with the denso s5 oval injectors in mating shape and pin size?
While they are not listed as cross compatible, yes, the DL appears to be the stock part. I had no issues getting the MT to plug into my stock Denso S5 injectors. Corsa-Technic was always extremely helpful any time I asked and even got me a part number for something they didn't stock so I could order elsewhere (terminals for the ECU water temp sensor). You could always email and they would likely know if both would connect to Denso injectors.
Following up, if you look at the mating part numbers for the DL-90-2-S2 and MT-2S-4, they also appear similar, but not identical. The locking tab on top appears to be slightly set back further on the MT. I think this is differences in the how spaced out the terminal portion is.
You have a good eye...I didn't notice that. I actually need those connectors to make a plug and play adaptor harness for a peak hold driver to use low impedence injectors on a rtek...I think I will email them ..thankyou ..cheers
Last edited by Nosferatu; Jul 25, 2022 at 11:20 AM.
The harness threw one final challenge at me that had me nearly on the garage floor in the fetal position, but I was able to fix it quite easily. The emissions harness had a nasty little surprise for me that I never noticed until I started doing some continuity tests. There are two sets of black/white wires in the harness. One comes from the ECU and one from X-10 or X-11, can't remember which. One of them is ground and one is +12V. I ended up crossing these at some point and had to run a few new wires. What an excellent choice to have the same color wire run both +12V and ground in different sections.
i've got that t shirt too! i think i crossed the 5v and ground? brown with black for me
It was such an awful feeling and it didn't help that I discovered it around midnight so I stayed up an additional hour to fix it. I think there only ended up being about three new wires to run, but initially it seemed I may not have had any of it correct. It was the emissions solenoids that I had run individual wires to branching out and a couple of them ended up being the wrong black/white so I just daisy chained them all together using the one I had correct. The only real hassle was getting a new one to ASV on the back side of the throttle body.
I still find it dumbfounding the same color would run both ground and +12V. Truly insane stuff. Some of the wire routing on the original harness I found odd, but that was things like a +5V being daisy chained and then backtracking to a different sensor. It got the job done, but didn't feel intuitive. I simply branched out a few times where needed.
All in all, it was a fun project, and I'd absolutely do it again.
As always, great work Jerry. This thread should be stickied if for nothing else than all the connector part numbers.
100% agreed. And +1 for the Hozan crimpers, they're amazing value for the quality
Originally Posted by Nosferatu
In the replacement connectors thread you mentioned you bought the BAC connector from Corsa Technic....Do you have the part no. for that from them? is it MT-2S-5? thanks
Looks like they're these units - Yazaki 090 Sealed 2-pin black, P/N 7223-1324-30
Predictably, Yazaki's own catalog doesn't recognize the part number, which is par for the course with how many times that catalog has failed me
Seems like these are similar in shape to your average Denso injector connector, but a bit more rounded and the indexing tabs are in the wrong spot. The DL and MT units are both Denso injector compatible and I have them in a box somewhere. Still don't know why Sumitomo has multiple connector families doing the same thing, but it is what it is. By any chance, could you confirm for me that the OE S5 injector connectors are the DL090 units? Can only guess from this end of a computer lol
Originally Posted by JerryLH3
I am in love with these shield terminations. Used them on my Civic, bought extras for my FC. Prowire USA has these in a form where a ground wire is already attached to the inner solder sleeve which I prefer using. Only downside is they use really tiny 22AWG wires which is functionally fine but fiddly to work with
Originally Posted by JerryLH3
This is an odd one. It's very similar to a Bosch Jetronic fuel injector connector, except for the oddly placed offset tab. The leg work on this one is all pzr2 on this post. The connector pictured in the first two pictures is indeed from Wiring Specialties. I went one step further and purchased the Aptiv part # he found of 12129143 (12129141 is non-stocked at Mouser). This is the gray connector pictured alongside the other in the third picture. I find this one much more aesthetically pleasing than the red connector. It fits, but I have not found the correct terminals yet. I believe Metri-Pack 280 terminals may work, but I have not ordered any yet to try this.
Yeah I am not a fan of the color either. One of these days I'll find a decent approximation of the original connector. Furukawa has their MJFC (not that I've seen it sold anywhere) in the same style as the Wiring Specialties unit but grey with a maroon TPA. The Aptiv/Delphi unit I think comes off a C4 Corvette ZR1. I tried finding someone locally with 1988 FC injectors to see if the Aptiv unit works with it, but every single time I'd drive out to see the injectors, they'd dig them out of a box and realize the tabs were filed off like everyone else seems to do.
Rant aside, here's the terminals for the Aptiv. MP280s are right on the money, but they're the MP280.1 PTS variation Aptiv uses on their other Bosch Jetronic injector connectors:
12077939 (cable range - 1.0-0.50mm^2 ~ 18-20AWG)
12103360 (cable range - 0.50-0.35mm^2 ~ 22-20AWG)
Predictably, Yazaki's own catalog doesn't recognize the part number, which is par for the course with how many times that catalog has failed me
Hot damn! I like Ballenger, but that's a good bit cheaper, and Ballenger doesn't carry many of the FC's stock connectors, so nice to find it at a source that does. I hadn't ventured too much into the Yazaki section.
Seems like these are similar in shape to your average Denso injector connector, but a bit more rounded and the indexing tabs are in the wrong spot. The DL and MT units are both Denso injector compatible and I have them in a box somewhere. Still don't know why Sumitomo has multiple connector families doing the same thing, but it is what it is. By any chance, could you confirm for me that the OE S5 injector connectors are the DL090 units? Can only guess from this end of a computer lol
I am nearly positive they are, but I have never bought any DLs to confirm.
I am in love with these shield terminations. Used them on my Civic, bought extras for my FC. Prowire USA has these in a form where a ground wire is already attached to the inner solder sleeve which I prefer using. Only downside is they use really tiny 22AWG wires which is functionally fine but fiddly to work with
The shield terminators are fantastic. I think the only reason I didn't buy the ones with a ground wire already attached was stock at the time.
Yeah I am not a fan of the color either. One of these days I'll find a decent approximation of the original connector. Furukawa has their MJFC (not that I've seen it sold anywhere) in the same style as the Wiring Specialties unit but grey with a maroon TPA. The Aptiv/Delphi unit I think comes off a C4 Corvette ZR1. I tried finding someone locally with 1988 FC injectors to see if the Aptiv unit works with it, but every single time I'd drive out to see the injectors, they'd dig them out of a box and realize the tabs were filed off like everyone else seems to do.
Rant aside, here's the terminals for the Aptiv. MP280s are right on the money, but they're the MP280.1 PTS variation Aptiv uses on their other Bosch Jetronic injector connectors:
12077939 (cable range - 1.0-0.50mm^2 ~ 18-20AWG)
12103360 (cable range - 0.50-0.35mm^2 ~ 22-20AWG)
Yes, thanks for throwing those part numbers in there for me, I just realized I never did that. Sarah at Corsa Technic pointed me in the right direction there and I got them ordered from Mouser.
Hot damn! I like Ballenger, but that's a good bit cheaper, and Ballenger doesn't carry many of the FC's stock connectors, so nice to find it at a source that does. I hadn't ventured too much into the Yazaki section.
Yeah, Ballenger is a good resource, but also a bit hit and miss with transparency on the connectors' origins and part numbers. I partly wonder if the pricing is a bit inflated because of it. I know that's usually the deal with EFI supply stores - find the connector, hide its origins, and mark up for the trouble. On the other hand, I haven't ordered much from them, so I'm not 100% sure if they sell genuine Sumitomo, Yazaki, etc. connectors. I know for sure though with Corsa Technic that they usually do not. They have the ultra fine print of "_______ Aftermarket" in individual product descriptions (which you almost never look in because you can add-to-cart straight off the catalog). Close-up inspection of the replacements vs. the original harness components show slight differences in shape. Not enough to impact function, but you know they aren't genuine articles.
