Yet another rectifier thread...

Are they ever going to end???

I searched the forum but couldn't find it covered. I know it has been but I can't find it.

Anyways....figured I may as well replace the rectifier back in December as the battery kept draining after very short runs. So I purchased a replacement off eBay. Yon chappy sent me a can hanger instead which wasn't much use so after 3 weeks of toing and froing he finally sends on another and I say great, thanks very much.

Turns out he has sent a pointy rectifier instead of a curvy. Much to my dismay...since I only found out when I had took apart the bike, removed the old one and went to fit the new one.

Is there a guide out there how to retrofit a pointy reg onto a curvy? Since the pointy one has more wires and different connections....

If it is possible then I want to do it, I don't want to have to go and buy another because simply put I don't have the money or the time.

Appreciate anyones thoughts.

Cheers

Greg

Don't suppose someone could scan in a pointy sv's wiring diagram, could you?

Think I could manage to wire it in if I had that.

There's a wiring site available on the main site, if you know where you're looking.

I reckon it's for a curvy, as it doesn't strictly apply to my pointy, but there's nothing important that I've seen different.

I did have a quick gander around on the net for a conversion, but couldn't see anything due to a lack of information.

What year is your curvy? Can you describe the connections on the loom, and on the rectifier? I'll take another look see if I can find anything that way (since the wiring diagram probably won't help - PM me if you'd like a look at it & can't find it).

I have a 99 SV650.

I got sent a different rectifier which I believe is from a pointy as it looks the same when searching for pictures on the internet.

1999 SV650 RECTIFIER made up of:

Black Connector - 3 wires
-Yellow
-Yellow
-Yellow

White Connector - 2 wires (but spare for another wire)
-Red
-Black&White

200X SV650 REPLACEMENT RECTIFIER made up of:

1st Black Connector - 4 wires
-Black&Red
-Black&Red
-Black&White
-Black&White

2nd Black Connector - 3 wires
-Black
-Black
-Black

So there is only 3 different kind of wires on both rectifiers. Black&White on curvy is Negative. Red is positive. Yellow comes from the Alternator.

Now I need to know what the pointy is... I would take a guess but I need to know for sure. (black&white=negative, black&red=positive, black=alternator...) Not quite sure how I would join the two wires together...well the best and safest way to do it.

Thanks Baph.

I'll take a look at this thread again when I'm in the office tomorrow.

If I don't find a more appropriate answer, I'll be working on the bike this weekend, so I'll get the multi-meter out & have a poke below the seat

Cheers mate.

I've had a little google around...

From what I can see, on the new rectifier, the 3 black wires are generator wires, and all carry alternating current, so it doesn't matter where you splice these into, so long as they go to where the old yellow one's went.

That's the easy part.

Then the black & red is battery 'hot' (+ve), and black & white is apparently negative/ground. Why there's a pair of +ve & a pair of -ve wires, I do not know though.

I'll try to double check things, but that's where my thinking is at the moment

Same as my thinking too then. Ace. Really need the bike up and running tomorrow. But there isn't really much to the rectifier, I can't imagine it being any other way around.

Tried poking about for an online manual but could only find a curvy one.

IMO, plug the black wires into yellow (in any order, it's AC current), then use a multi-meter to bridge black&red to black&white (+ve to -ve).

See what voltage, and in what direction you get it.

PLEASE PLEASE PLEASE re-check my thinking on this, but IIRC, it'll only be giving out ~18V at 3A on the battery side. Just don't fry yourself because I'm wrong!

EDIT: just a thought, but the dual pole output could be a weak attempt at dual phase rectifying via an operational amplifier, but I'll look more into that when it's not so late

Originally Posted by Baph

PLEASE PLEASE PLEASE re-check my thinking on this, but IIRC, it'll only be giving out ~18V at 3A on the battery side. Just don't fry yourself because I'm wrong!

Hey, no problem buddy. Footering around with it is my responsibility and no-one elses. If it goes bang or fries my bike, it's my fault. No-one elses. But I appreciate the comments. I think everything through to understand how it works before I do anything. I know what you mean though...I'll try all that tomorrow morning.