View Full Version : Reg rec wiring identification
Sorry for posting on such a trivial topic but this ongoing rec reg thing is driving me nuts, I have now bought a FH022BA rec/reg for my upgrade, it's from a Yamaha MT10 2016 and has a single 5 wire plug, identified the lower 3 stator pins easy enough but the 2 pins above are a mystery as to which is live and earth. Have been searching every Avenue possible to get the answer all to no avail 😡 tried Yamaha forums too, just can't find any diagrams that clearly show the orientation of the wires. Does anyone have a clear picture of the wiring ? Or anyone used this rectifier for an upgrade who could enlighten me.
Without the info my bike is going nowhere fast.
Thanks peeps.
SV650rules
16-08-20, 08:53 AM
This is the third thread on your RR - probably better to keep al the stuff together under original 'battery woes again' ? Makes it easier for anyone searching in future for one thing.
This youtube shows the positive terminal nearest centre of RR ( the terminal with red dot on it ) - just like embee said in other thread ( wiring info please ) - this youtube guy uses 10 gauge ( 5mm ) for + and - and 12 to 14 gauge ( 2.5 to 3 mm ) for stator
https://youtu.be/sSo2AY6Nm5M
This is page 430 from the MT10 service manual:
https://www.manualslib.com/manual/1536165/Yamaha-Mtn1000-2016.html?page=430#manual
item # 2 in the bottom left corner is the reg/rec. The connections are shown as:
WW
BWR
W = alternator o/p and R = + and B = - Not the way I would have predicted. The only problem you will need to solve is whether they are looking into the plug or the socket which is in the manual somewhere ;)
16743
It's the wrong rr, different plug, this is why I reposted with details for a FH022BA only.
SV650rules
16-08-20, 10:05 AM
Some Yamaha have a wound rotor rather than permanent magnets on the generator to vary the voltage output ( like a car alternator ) - don't know which models though, and which RR they use for control.
Why not go to shindengen UK or USA site and see if they have any info, or contact them with your query ? A clue may be the position of the locking tab on the view in service manual... seems to show the male part of locking tab on the view . On my AL7 the OEM Shindengen loom had the female part of locking tab, the male part on the bikes loom, but that is a SH811AA with two separate flying leads.
PS tried searching for FH022BA on Shindegen website and it comes up with not found, and internet search for same number also only comes up with FH022AA
Awkward only having one plug, makes it harder to connect a dummy load of 21watt 12volt lightbulbs in parallel across 12 volt output pins to check polarity with voltmeter ( engine only
running at tickover ),
It's the wrong rr, different plug, this is why I reposted with details for a FH022BA only.
here's a pic of FH022BA on ebay from an MT10.
https://www.ebay.co.uk/i/164123096091
It's the wrong rr, different plug, this is why I reposted with details for a FH022BA only.
The diagram Seeker has posted looks to me like the 5 pin connector you have on your FH022BA. Top row with 2 pins, bottom row with 3 pins.
If that's the case, the stator wires (white in the Yamaha case) go to the top two pins and the centre of the bottom (3 pin) row.
The red and black are the outer two of the bottom (3 pin) row.
The schematic for the reg/rec as shown is for function only, it shows the 3 stator wires going into it and the 2 output wires on different sides of the "black box", but it is schematic only. This is why it also shows an image of the connector itself.
What isn't totally clear, exactly as Seeker says, is whether the view of the connector is for looking at the reg/rec or at the wiring harness. Possibly the shape of the connector body will make it clear which you're looking at, one is male one is female, the latching clip should make it clear. I would guess it's looking at the reg/rec, but that's a guess.
If it was me I'd err on the side of caution and do the polarity check (as suggested elsewhere) with the engine idling and a load across the output (a lamp) and use a multimeter to determine the polarity. If you get it wrong it could fry something.
SV650rules
16-08-20, 10:53 AM
Looking at the plug on RR in seekers link the top of the plug where it latches looks as though it fits inside the view of the connections shown in MT10 manual - It seems that the view of plug shown in MT10 manual is the 'bike' side of the plug - which makes sense really....
........- It seems that the view of plug shown in MT10 manual is the 'bike' side of the plug - which makes sense really....
I agree ........................ or disagree, one or the other! :p :smt119
SV650rules
16-08-20, 11:09 AM
I agree ........................ or disagree, one or the other! :p :smt119
I know I used to be indecisive - but nowadays I am not really sure if I still am or not :confused:
This guy is showing you how to test the FH020AA / FH012AA with a meter, the difference between the AA and the BA is the connector. The FH 012/020/022 are all in the same family. So if you connect your positive multimeter probe (set on diode setting) into what you suspect is the negative output of the r/r and the negative probe into any of the alternator inputs and get a reading of 500 ohms (approx) then you have identified the negative output correctly. If you don't get a reading you have identified the positive output.
https://tinyurl.com/y6mrvvsv
This guy is showing you how to test the FH020AA / FH012AA with a meter, the difference between the AA and the BA is the connector. The FH 012/020/022 are all in the same family. So if you connect your positive multimeter probe (set on diode setting) into what you suspect is the negative output of the r/r and the negative probe into any of the alternator inputs and get a reading of 500 ohms (approx) then you have identified the negative output correctly. If you don't get a reading you have identified the positive output.
https://tinyurl.com/y6mrvvsv
Just did the test as you suggested, and now the test makes sense, the fh022ba is as you pointed out totally different from the 'norm'. Its been driving me nuts.
All seems to be ok with the reg as all stator readings were 498 exactly, so... now just have to wire it all up and hopefully get 14+v as opposed to the 12 ish v I've been getting from the rr85.
Can't thank you enough. Cheers.
Many thanks for the pic, by doing the test as another member suggested I have been able to identify which is the live and earth, and by looking at the rr diagram you posted it looks like it's of the bike side plug as when turned to face the rr all the stator and live, earth line up perfectly.
Many thanks for your help with this. It is very much appreciated.
This is the third thread on your RR - probably better to keep al the stuff together under original 'battery woes again' ? Makes it easier for anyone searching in future for one thing.
This youtube shows the positive terminal nearest centre of RR ( the terminal with red dot on it ) - just like embee said in other thread ( wiring info please ) - this youtube guy uses 10 gauge ( 5mm ) for + and - and 12 to 14 gauge ( 2.5 to 3 mm ) for stator
https://youtu.be/sSo2AY6Nm5M
As said, sorry for all the numerous postings on the subject, was getting pretty desperate tbh.
I have seen the clip and as mentioned before it's the wrong rectifier, so had no bearing on what I was trying to sort out.
Thanks anyway.
Just a request......
when you've 100% identified things, how about a photo of the reg/rec socket with the +/- clearly marked.
Explanations are all well and good, but saying " it looks like it's of the bike side plug as when turned to face the rr" is still a little open to confusion (I'm still not certain myself ...)
SV650rules
16-08-20, 02:55 PM
Yup, we need feedback for the peeps who may have same problem..
No problem doing that, the picture was posted by 'Seeker' so I had to study it and take a guess as to whether it was from the rec side or the loom side, but together with the diode test I think I've got it sussed but wont be 100% sure until it's fitted and charging as it should. Pointless posting anything until it's fully sorted but when it's done and I'm happy with it I'll get all the info together with some pics that explain the conversion in detail.
Just have to figure out how to post up pics now!
SV650rules
16-08-20, 04:36 PM
If you don't have a photo hosting site you can paste a photo into an msword doc and write notes on it,save as .PDF and if you ' go advanced' when posting you can attach to a post as long as it is less than 125mb.. you can attach a jpeg same way, bearing in mind attachment size limit.
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