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Electrical
Where does this wire go?
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Thread: Battery not charging - no voltage change while reving Reply to Thread
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  Topic Review (Newest First)
12-03-2011 07:38 PM
thtanner w
Quote:
Originally Posted by VN750Rider/Jerry View Post
I had a hunch the stator was still good. The best way to go when you have burned connectors might be to just cut them out and solder the wires together. This eliminates a possible point of high resistance, which is what burned the connector in the first place. I did this with the three yellow stator wires at the 3 bullet connectors. The wires were brown and hardened from heat. One of the connectors broke off while I was disconnecting them. I soldered everything, used shrink wrap on it, and have not noticed a problem since. Apparently the bullet connectors were not making good contact.
I may just have to do that for the stater wires. I just replaced the harness going into the R/R - which should be identical to our stock R/R. If it had cable leads coming out of it, then I would have considering doing the same there as well.

For closure, here is a pic of the (new to me) R/R, and harness installed on a bracket that's over the fuse box.

12-03-2011 11:14 AM
VN750Rider/Jerry I had a hunch the stator was still good. The best way to go when you have burned connectors might be to just cut them out and solder the wires together. This eliminates a possible point of high resistance, which is what burned the connector in the first place. I did this with the three yellow stator wires at the 3 bullet connectors. The wires were brown and hardened from heat. One of the connectors broke off while I was disconnecting them. I soldered everything, used shrink wrap on it, and have not noticed a problem since. Apparently the bullet connectors were not making good contact.
11-30-2011 05:13 PM
thtanner ...and now we're charging! Up to 14.5v while > 3k rpm.

The cheap Chinese regulator lasted (at most) 30 running hours that the PO bought for $60 on eBay, and it never pushed more than 13.6v. This $17 pulled r/r is immediately pushing good charging volts. Goes to show that sometimes quality matters

Update: I just got back from an hour or so cruise and all is still well in the world. Feels good to be riding again!
11-30-2011 02:20 PM
thtanner That's awfully nice MaDeInSin. I guess we'll see after I put in my replacement R/R.

The R/R just came in but the replacement harness *just* shipped today - horrible! I'm going to go to some auto stores to see if I can find a harness to replace mine *today* as I really don't want to cause issues using a janky harness.
11-28-2011 09:31 PM
MaDeInSin
Quote:
Originally Posted by thtanner View Post
I have a new r/r wiring harness on order to get rid of the nasty stock one that looks like it was assaulted with battery acid at one stage.

A replacement R/R off a '92 Ninja ZX600 was a whopping 16.99 shipped, so here's hoping that it tests good - as it is a compatible part.

I guess waiting for all this gives me time to do all of the fluids, spline lube, and replace both tires.

I am just hoping I don't have to do the stator but if so, no big deal. I'll test that as soon as the new R/R is on. I don't really want to run the bike with the bad one just in case.

I am pretty sure that I got that stator cover from Rags right before you did... I know hes making you one but I would happily give you this one and get the next one if you need to do your stator. I am in no hurry at all.

Jay
11-28-2011 10:32 AM
thtanner For posterity's sake I am just posting where I got the replacement wiring harness (female - bike side).

I got it here:
http://www.ebay.com/itm/VOLTAGE-REGU...item415fbe0648

It is also available here if the eBay item is no longer available when you need it.
http://www.procycledepot.com/content...S?item=1680804
11-26-2011 09:31 PM
thtanner I have a new r/r wiring harness on order to get rid of the nasty stock one that looks like it was assaulted with battery acid at one stage.

A replacement R/R off a '92 Ninja ZX600 was a whopping 16.99 shipped, so here's hoping that it tests good - as it is a compatible part.

I guess waiting for all this gives me time to do all of the fluids, spline lube, and replace both tires.

I am just hoping I don't have to do the stator but if so, no big deal. I'll test that as soon as the new R/R is on. I don't really want to run the bike with the bad one just in case.
11-25-2011 11:06 PM
VN750Rider/Jerry Yepper, that is fried alright. My '85 Goldwing had 3 of those white plastic connectors between the stator and the R/R. All were badly burned. I cut them out, and soldered all the wires together between the stator and R/R. Both the stator and R/R tested good, and the battery was charging, but the R/R was still running red hot. I was afraid it could go any time, and leave me stranded far from home, so I finally gave up and went with a belt driven car alternator, unfortunately not an option on the Vulcan. The 4 cylinder Goldwing is another bike where you have to pull the engine to get to the stator. The problem with it is the stock R/R lacked anywhere near the capacity to handle the stators output, and there is no known upgrade.
11-25-2011 06:12 PM
thtanner Well, here's an update.

The R/R is testing bad. The diode test is failing on the third stator input to the 12v. I haven't even gotten to the stator yet since there was a huge visual red flag when I disconnected the R/R.

Connector from the R/R


Connector from the bike


I guess I need a R/R to start with....
11-25-2011 04:41 PM
VN750Rider/Jerry Having the ground cable come off would not likely have damaged the stator. It will run completely disconnected without damage. I can only hope that whoever did that mod removed the cover before doing all that cutting. Not a good thing to have an engine full of metal dust and shavings.
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