Power not getting to battery

[guy10596]

Hi I am new and was hoping someone could help me i have a 75 goldwing that i just got running been sitting 20 plus years has 11000 miles my question is it is not charging the battery i have the 5 AC volts per yellow wire coming from the stator , i have change the regulater and the rectifier but it is still the same dose anyone know what the power should be coming from the rectifier and where dose it go next , and so on , i have the wire diagram but it is kind of hard to follow

 

[roncar]

I assume you mean 50vac?

More important is the NO continuity between any yellow and ground. The voltage readings can be misleading. Also make sure the connections (stator, rectifier, regulator) are clean and making good contact.

 

[guy10596]

I already check for the connections between the yellows and all checks out ok , i also have clean connections

 

[guy10596]

I wish they made a diagram that shows how the power goes though the bike , the wire diagram isent always the same from i think someone has change some of the wires

 

[guy10596]

I have 4 to 5 volts AC on each wire coming from the stator

 

[backlander]

:wave: Hello guy and welcome to CGW. Here's a short course on power circuit of gl flat four engines. At approx. 3000 rpm the three yellow wires should be producing approx. 45 to 60 volts ac each. and sending it to the Reg/Rec where the ac voltage is converted to dc by the rectifier and the voltage regulator allows approx. 14.8 volts to be sent to the battery to maintain it's charge. The battery provides approx. 12 volts to the starter solenoid and the main fuse, then up to the fuse box under the faux tank cover. There the power is distributed to the various electrical circuits needed to operate the bike. Maybe that will help you follow the electrical schematic a little easier.

 

[slabghost]

Very good basic wiring explanation there backlander. Guy if you only get 4-5 volts ac at the yellow wires as you say. Then you really do not have a charging system on your bike at all. Have you checked the yellow wires for continuity to ground as suggested above? It seems to me you are faced with a decision others before have dealt with. To replace the stator or to adapt an external alternator of some kind.

 

[guy10596]

that is the same volts i get from my 82 wing AC 4-5 volts , i think i found the problem the bike is wired wrong , who ever had the starter solenoid off put the wires on wrong cause i also have a starter that wont disengage so the power that should be going to the battery is going to the starter, this checks out on the wiring diagram

 

[roncar]

... i think i found the problem the bike is wired wrong , who ever had the starter solenoid off put the wires on wrong...

Great that you found that. Here is the basic schematic of the charging system.

And the stator test procedure, also from the Honda Service Manual

The only reference I've seen for a voltage output check was a Service Bulletin for the 1984 GL1200's as mentioned in the GL1200 Clymer manual. I'm assuming they had a failure where the ohms tests passed but the output was still insufficient to keep the battery charged. All reference indicates this test is only useful for 1984 GL1200's as they had some faulty stators. If not done right, results can be misleading.

 

[guy10596]

i change the wires and it is charging 15.4 volts now i always assume that the wires are correct ! thanks