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alternator 3 yellow wires

3K views 22 replies 11 participants last post by  piperbill 
#1 ·
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I,m swapping the engine for another on my 1200 aspencade.does it matter which way round you connect the 3 yellow wires to the harness which connects to the regulator.
 
#3 ·
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1000-1100--1200 , not sure about the rest of them , it dont make any matter how they go back togather. just make a good soild connection and insulat them good from each other.
 
#5 ·
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I just experienced a nice electrical flameout, so to speak, on the way to work this morning. I smelled a little smoke and realized it wasn't from the truck in front of me, but from next to my left boot. As I glanced down and saw the wisp of smoke, a small flame appeared as well. I pulled over quickly and put the flashers on (really fun in the center shoulder during rush hour traffic). Sure enough, the connector to the left of the battery was charred, as were about an inch of the wires.

I'm only recently getting back into serious riding with my (bought it new) '86 Aspencade, so after doing a minor tuneup, replacing the brake pads and tires, I've been gradually riding and listening/watching/checking for anomalies. I forgot all about the dread stator connector issue after all these year.

So, is this connector on the left of the battery indeed the stator wiring (3 wires - color indistinct but probably yellow as per the manual)? And is soldering all three the standard fix? I've seena note about replacing the wire with larger gauge, but is that easy to do or does the alternator have to be dismantled?

Anyway, I'm at work so my plan is to go to Radio Shack at lunch, grab a roll of 12 gauge wire, one of those new battery soldering guns (and solder) and fix this thing so I can get it home safely. Anything else I should do at this point?

_________________
Bill Tubbs
 
#6 ·
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piperbill wrote:
I just experienced a nice electrical flameout, so to speak, on the way to work this morning. I smelled a little smoke and realized it wasn't from the truck in front of me, but from next to my left boot. As I glanced down and saw the wisp of smoke, a small flame appeared as well. I pulled over quickly and put the flashers on (really fun in the center shoulder during rush hour traffic). Sure enough, the connector to the left of the battery was charred, as were about an inch of the wires.

I'm only recently getting back into serious riding with my (bought it new) '86 Aspencade, so after doing a minor tuneup, replacing the brake pads and tires, I've been gradually riding and listening/watching/checking for anomalies. I forgot all about the dread stator connector issue after all these year.

So, is this connector on the left of the battery indeed the stator wiring (3 wires - color indistinct but probably yellow as per the manual)? And is soldering all three the standard fix? I've seena note about replacing the wire with larger gauge, but is that easy to do or does the alternator have to be dismantled?

Anyway, I'm at work so my plan is to go to Radio Shack at lunch, grab a roll of 12 gauge wire, one of those new battery soldering guns (and solder) and fix this thing so I can get it home safely. Anything else I should do at this point?

_________________
Bill Tubbs
Don't forget the shrink tubing to insulate the connections with.
 
#7 ·
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Good point. Thanks! I note that the Shack only has 10 gauge, but better than 14 ;-)

Thanks, Michael.

Just to confirm (since the online photos aren't really clear) am I correct that the cylindrical object in front of and lower than the battery is the alternator and the 3 wires coming out of the center of it are the stator (yellow) wires since they go directly to that 3-prong connector next to the battery? I'm 90% sure, but 100% is better :)

Thanks,
Bill
 
#8 ·
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Bill, if you see a fried connector with 3 yellow wires, those are the ones you need to pay attention to.


I posted in the GL1200 forum that you will need to check the stator and also check the rectifier/regulator. If you had that flame out, you probably fried the regulator too.
 
#9 ·
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Get your wiring at NAPA or Auto Zone. RS is too high in price.
 
#10 ·
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I'm under some time constraints and RS is the only place close by, or I wouldn't go there. Plus I have tons of good automotive wire at home, but thanks for the idea.



My original stator went out back in the late 80s and I was rewarded by Honda with a $900 "lifetime warranty" replacement installation. If the stator is fried, then I guess I'll find out if they lied or not. And then to find a Honda shop that will actually work on it :)



I'm going to see how far I get on the battery (30 miles home) and go from there.
 
#13 ·
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10 gauge is better than 12 and if you pull the headlight fuse you can ride further if the stator is gone. Not recommended for night riding though
 
#14 ·
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I've actually put a 2nd battery in the travel trunk on a 750 and a charger plugged up to both batteries at work to get home from the 2nd shift, had to replace a bad regulator.
 
#16 ·
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neoracer wrote:
pull the connector at the regulator and check that too,it can also be an evidentual problem area too
Is this the connector on the right side of the battery? Yep, that fried a few years ago and I soldered it at the time. But I'll recheck it to see how it's holding up. Thanks.



I saw a note (I think) about checking the stator output voltage at 50v on each of the 3 wires (bike running, I assume :) ) Is this correct? And if there isn't the 50v then I have a stator problem....



FYI, I decided to take recommendations and just ride the bike home on battery support only. I wasn't sure if I could do it for 30 miles, but it was no problem. I'll try to fix it this weekend.



Thanks for all the tips!



Bill
 
#17 ·
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If ANY of the stator wires short to ground, your stator is fried. The stator connector is the first connector to the left of the battery. It only has 3 conductors in it.

the regulator connector is under the tool box compartment in front of the gas cap on the left side of the bike.

The 'fix' will be to remove your engine, pull the back plate off the engine and replace the stator after you order it. You could also get the 'Poorboy' conversion which many of us have done. You will not have to remove the motor, but a slight modification is required.

Or am I understanding the situation wrong?
 
#18 ·
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Nope, you've got it right, Conley. I don't believe anything shorted to ground, but when the connector 'fried' a couple of the stator wires shorted to each other and that's going to be the problem.



I'll run through voltage checks this weekend and see how it pans out.



Thanks!
 
#19 ·
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Okay, thought I'd end my part of the thread with good news. The stator checked out okay with voltage checks (+50 on each wire @ 3000rpm) so I went ahead and soldered clean lengths of 12 gauge wire between the stator wires and the regulator wires, and took a short 100 mile trip. No problems, and in fact the bike seems to be running better. I'm guessing that the wiring was on its way out for a while and the resistance buildup cause the voltageto drop a bit, because I've been getting a little backfire and some missing recently. During my 100-miler, absolutely nothing like that.



Knock on wood.... :)



Thanks for the help here!
 
#22 ·
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Good Job. Did you cross check the 3 yellow stator wires for NO RESISTANCE across all 3 yellow wires using an ohm meter? Then, grown the Omm negative meter to the negative of the bike and neg on the ohm meter, and with the red, check each yellow wire and make sure there is no resistance there either. If there is an open connection on any of the yellow wires, the stator will have to be replaced. (I believe I said the right. If I am wrong, please intervein) This is one of the most Important Test.
Good Luck,
Nightrider1
 
#23 ·
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Yep, there was negligible resistance at all points. Like I said, I didn't check out the regulator so I'm gambling on that component, but I just cruised the 30 miles to work this morning after letting the bike sit for a day. Runs great!! <knock on wood>
 
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