headlight out


Information and questions on GL1100 Goldwings (1980-1983)
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drmichael@excite.com
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headlight out

Postby drmichael@excite.com » Mon Aug 22, 2011 1:12 pm



Hi,
I started my bike and the headlight wouldn't turn on. No blue light for the bright light. All other electronics appear to be working. I read on a previous message that the problem is likely the key (ignition) switch. If that is correct, do I need to replace the ignition-key and all? How do I test to see if that is the problem?

As always-many thanks to all of you who have helped me put my bike on the road and keep it running.

Mike



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RBGERSON
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had every year from 75 to 83

Re: headlight out

Postby RBGERSON » Tue Aug 23, 2011 8:52 am

Not ignition as first thought.. switch at starter button could do it, bad bulb???, loose wire in the headlight bucket..
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

drmichael@excite.com
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Joined: Fri Aug 20, 2010 8:24 am
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Re: headlight out

Postby drmichael@excite.com » Thu Aug 25, 2011 1:41 pm

Thanks for the input. Bulb is ok. Wires are ok. To get to the switch, do I take the whole light cover off (where the green idle, blue bright, oil, turn signals) are housed? If in get to the switch, how do I check it?

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thrasherg
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Re: headlight out

Postby thrasherg » Thu Aug 25, 2011 3:08 pm

The ignition switch does not drive the headlight directly, it drives a relay that then operates the headlight, I would be checking the relay first!!

Gary

drmichael@excite.com
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Re: headlight out

Postby drmichael@excite.com » Fri Aug 26, 2011 10:49 am

Sorry for the ignorance, but how do I find and check the relay. I appreciate the help.
Mike

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virgilmobile
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Re: headlight out

Postby virgilmobile » Fri Aug 26, 2011 10:56 am

Unless it's modified wiring,the power for the head light hi/low beam switch comes from the START BUTTON.It's a 2 part switch,the head light is turned off when cranking the engine.The switch contacts corrode/melt.Clean them up and stretch the spring a little for a firm contact.

drmichael@excite.com
Posts: 36
Joined: Fri Aug 20, 2010 8:24 am
Location: akron, ohio
Motorcycle: 1981 Gold Wing GL1100

Re: headlight out

Postby drmichael@excite.com » Mon Aug 29, 2011 3:32 pm

I took apart the switch (off the handle bars). I cleaned up the outside terminals. Inside, it looked clean as new-so I'm not sure what to looke for. Is there a diagram or picture as to what I should be looking for to see if the problme is in the switch?
Thanks,
Mike

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virgilmobile
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Re: headlight out

Postby virgilmobile » Mon Aug 29, 2011 4:14 pm

The start switch has 4 contact posts inside it and 2 spring loaded shorting bars.When in the rest position,power enters the switch with the key on at the black/red wire and exits on the blue/white.

If it has no volts on the blue/white and has volts on the black/red,the switch must be disassembled and repaired.
No volts on the black/red...blown fuse.

You could also test jumper at the plug the 2 wires to verify the headlight does work.

drmichael@excite.com
Posts: 36
Joined: Fri Aug 20, 2010 8:24 am
Location: akron, ohio
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Re: headlight out

Postby drmichael@excite.com » Mon Aug 29, 2011 5:03 pm

Thanks, I will give it a shot!

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virgilmobile
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Re: headlight out

Postby virgilmobile » Tue Aug 30, 2011 6:47 am

IF the headlight part of the switch is damaged beyond repair and the start part is OK,I have a method of bypassing it that will simulate the switch.
Also,if the contact point has overheated and melted the plastic housing and sunk down,,,A soldering iron can re-heat it again and push it back.Clean the contacts and lube with dielectric grease.Stretch the spring a little to provide a good firm contact.

drmichael@excite.com
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Re: headlight out

Postby drmichael@excite.com » Tue Sep 06, 2011 7:41 pm

Hi-if anyone is still hanging in there. I took the switch apart-and still don't get it. So I took a reading on the 2 wires feeding the right switch and the left switch. The right switch read 25V. The left switch did not give a reading. The horn and signals work but not the headlight.

Does this finding help in my search to solve the headlight issue?

Thanks,
Mike

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virgilmobile
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Re: headlight out

Postby virgilmobile » Wed Sep 07, 2011 9:45 am

I really hope it doesn't read 25 volts.It should be near 12 volt.Retest the meter reading at the battery.
Here's the schematic with test points marked.

You also mentioned "NO BLUE LIGHT".Can I assume you mean the high beam indicator on the gauge?
If so ,It won't light up until you get power through the high low switch.
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drmichael@excite.com
Posts: 36
Joined: Fri Aug 20, 2010 8:24 am
Location: akron, ohio
Motorcycle: 1981 Gold Wing GL1100

Re: headlight out

Postby drmichael@excite.com » Wed Sep 07, 2011 12:58 pm

Thanks for the diagram. I hope to check it out tonight as well as test the voltage at the battery. Yes, the blue light I mentioned is the high beam indicator on the gauge.

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virgilmobile
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84 GL 1200 I

Re: headlight out

Postby virgilmobile » Wed Sep 07, 2011 2:27 pm

As mentioned before you could bypass the start button wires that run power to the headlight to see if the lights and hi/lo switch is OK by ..First verify that the "black/red" has 12 volts on it and short it to the "black/white"wire.These wires go to the start button.

This is a test.This is only a test,if it had been an actual......Wait a minute...wrong message :D

drmichael@excite.com
Posts: 36
Joined: Fri Aug 20, 2010 8:24 am
Location: akron, ohio
Motorcycle: 1981 Gold Wing GL1100

Re: headlight out

Postby drmichael@excite.com » Sat Sep 17, 2011 10:31 pm

Thanks again, everyone, for your help.

I tested the start switch and got nothing on the red wire though the blue wire was good. Checked the fuses and they were alright. Decided to get another switch on Ebay. It was a bear to unplug the old and plug in the new. The space on the bike isn't large enough and the female plug is not secure. Anyway, I got it done-the light is on and the bike runs fine. So it's going to be a nice day tomorrow and I'm going to ride!




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