Slow charging 83 gl1100a


Information and questions on GL1100 Goldwings (1980-1983)
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Prlwng
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Motorcycle: 83 gl1100a

Slow charging 83 gl1100a

Post by Prlwng »



Gl1100a 83. Been starting and charging good. Or, was it over charging at 14.7.

Went for ride and noticed dash said 12.8. Hit brakes turn etc and it would drop to about 12.2. Stator wires very warm. Not shorted. Battery off multi meter showing 12.2. When running at 3 tho will very slowly creap up to 12.8. About two minutes.

Battery?(do not know how old)

Regulator rectifier?

Will pull bat and get it checked. But would like reasurence going in right direction.


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Rambozo
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Re: Slow charging 83 gl1100a

Post by Rambozo »

Test stator for output. If it's good, that points to the rectifier/regulator. Check for power at sense wire.
MattMcCoy
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Motorcycle: 1983 GL1100A Aspencade

Re: Slow charging 83 gl1100a

Post by MattMcCoy »

Have the stator wires been soldered or does the bike have the original wiring harness? Hot wires would indicate resistance, likely between connections. Here’s how to test the charging system:

https://www.randakksblog.com/comprehens ... eshooting/
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Prlwng
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Re: Slow charging 83 gl1100a

Post by Prlwng »

Put a new battery in last night. Put it on trickle charger all night. Was green charged light this morn. Fired up bike. Volt meter went up to 14.8 after a few revs. Charging like it had been.

Meter did hit 15 then back down to 14.8. Yellow wires still kinda hot. (Will solder them yet this morn.)

Could it be over charging?

It did have one of those, what I call gel cell batterys in it. Put the old standard lead acid in now. When shopping for reg/rec noticed some said for avg bats.

TY
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Rambozo
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Re: Slow charging 83 gl1100a

Post by Rambozo »

Prlwng wrote: Thu Aug 26, 2021 7:19 am When shopping for reg/rec noticed some said for avg bats.
AVG or AGM?
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WingAdmin
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Re: Slow charging 83 gl1100a

Post by WingAdmin »

That's definitely overcharging. Overcharging a battery like that for a length of time will cause the battery to fail. Wet cells will boil off electrolyte.

My 1100 did the same thing until I fixed the problem. The problem is that the regulator uses the standard black switched ignition wire as a sense wire. So as time and corrosion takes its toll through the numerous connections, switches and so on in that black wire's circuit, the voltage at the end of it drops. If you measure the voltage of black wire at the regulator and compare it to the voltage at the postive battery terminal, you'll likely notice a difference of a volt or two.

The problem is that the regulator uses this as the sense wire, so if it sees low voltage there, it boosts its output in an attempt to "make up." The result is voltage output higher than it should be.

How I (and many others) fixed it on my 1100 was by using a standard automotive relay. The black wire is repurposed to actuate the coil in the relay, and the relay contacts are used to connect the red wires on the regulator (which run directly to the battery) to the sense wire on the regulator. That way the regulator gets a true view of the correct voltage of the battery, and puts out the correct voltage.
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Prlwng
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Re: Slow charging 83 gl1100a

Post by Prlwng »

Looked for a wire diagram on how to put the relay in. No such luck. However, after moving bike from my shop to house garage, 200 feet, it was down to 14.5. Did not have chance to solder the wires. Did put multi meter direct to bat, not running, 13.2, running, 14.5.

Thought it was overcharging some. Most of my other volt meters would read about 14.

Over winter will put an amp gauge in. Always trusted them more for instant problems. Saw a thingy somewhere on installing one. Hope to find a didgetal one.

TY
Bill
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Rambozo
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Re: Slow charging 83 gl1100a

Post by Rambozo »

12 volt flooded lead acid typically wants 13.8 to 14.2 volts. Check the voltage at your sense wire and see what it reads compared to at the battery.
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Prlwng
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Re: Slow charging 83 gl1100a

Post by Prlwng »

Found a utube on checking reg/rec. Checked the one I have from an 82. Good. So proceeded to get to the 83 one. Checked good. All readings about .53. Volts same from black wire to battery.

So proceeded to solder yellow wires. They not getting hot now. Warm yes. But you can still touch them with no burnt fingers. Had not woried much about that conection as a new one had been put in. Goes to show that old methods sometimes work better.

Did find out that the 82 has a different wirering to plug. Not same secquence.

Thanks all for your help.
Bill


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