'80 GL1100 electrical issue


Information and questions on GL1100 Goldwings (1980-1983)
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sam6942
Posts: 22
Joined: Fri Dec 31, 2010 12:26 am
Location: Honolulu, Youknowwhere
Motorcycle: Grandpa's 1980 GL1100
1979 Yamaha XS1100

'80 GL1100 electrical issue

Postby sam6942 » Fri Apr 05, 2013 4:48 pm



I picked up my Grandpa's bike a few weeks ago and have found a few things that need attention and was hoping you guys would have the insight I'm lacking..

1. Gunked up carbs (rebuilt, just need to get my buddy's sync gauge to finish up.)
2. brakes stuck (they free up with a tap of a hammer, already plan on getting a set of the stainless pistons I've seen posted here)
3. The oil/neutral/fuel/cushion fuse keeps blowing. At one point, the neutral light came on with the start button pressed and then it stopped doing that, too. Fuse still blows. Checked continuity across the fuse terminals and got 0 ohms, so I took the false tank and the fairing off and checked all the wires/connectors I could think of and I can't find anything burnt (save the sticky goo that leaked out of the ignitors on the LH side. Any ideas/suggestions?

Thanks in advance!

Sam


If a light sleeper sleeps lighter with a light on, does a hard sleeper sleep harder with a hard on?

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trashtruck
Posts: 236
Joined: Fri Aug 31, 2012 7:55 pm
Location: albany, New York
Motorcycle: 1982 gl1100 interstate

Re: '80 GL1100 electrical issue

Postby trashtruck » Sun Apr 07, 2013 7:24 pm

faulty neutral switch?
WHAT IS THE SPEED OF DARK?

User avatar
sam6942
Posts: 22
Joined: Fri Dec 31, 2010 12:26 am
Location: Honolulu, Youknowwhere
Motorcycle: Grandpa's 1980 GL1100
1979 Yamaha XS1100

Re: '80 GL1100 electrical issue

Postby sam6942 » Mon Apr 08, 2013 1:09 am

Haven't checked the neutral switch yet. I'd almost rather rule everything else out before dismantling the bike to get at it.. speaking of such, I've narrowed it down to the instrument cluster. After unplugging the two connectors the short went away. Now, I'm no mechanic or electrician so forgive any flaws in my thinking here :roll:... This is what I've got set up: key off, fuse out, multimeter set to ohms with alligator clips across the fuse clips. plugged in = 0 ohms, unplugged = 1033 ish ohms (I think). I started with disconnecting items one by one, when that didn't work I started working the wires by hand and eventually noticed that the gauge light sockets were causing the resistance to drop down to 0.06 ohms intermittently (different circuit, right?) and still, everything opened up, the only thing I found burnt was the bulbs (all of the gauge bulbs are toast. which is weird because they measure open yet cause a short..) It's making my head hurt trying to figure this out. Could the 7V regulator have shorted and caused this? Another component I'm not thinking of?.... I can take pictures if needed.
If a light sleeper sleeps lighter with a light on, does a hard sleeper sleep harder with a hard on?

User avatar
sam6942
Posts: 22
Joined: Fri Dec 31, 2010 12:26 am
Location: Honolulu, Youknowwhere
Motorcycle: Grandpa's 1980 GL1100
1979 Yamaha XS1100

Re: '80 GL1100 electrical issue

Postby sam6942 » Mon Apr 08, 2013 2:08 pm

Okay... after looking again (and realizing that I don't have to take it apart to test it, just disconnect it) I think the neutral switch is bad. Would that cause what I'm seeing with the bulbs?

And thanks for the assist, trashtruck!
If a light sleeper sleeps lighter with a light on, does a hard sleeper sleep harder with a hard on?

User avatar
sam6942
Posts: 22
Joined: Fri Dec 31, 2010 12:26 am
Location: Honolulu, Youknowwhere
Motorcycle: Grandpa's 1980 GL1100
1979 Yamaha XS1100

Re: '80 GL1100 electrical issue

Postby sam6942 » Mon Apr 08, 2013 3:23 pm

Sooo.. after getting it to flash the neutral light at me every time I hit the starter, I realized I left it in gear after testing the switch. I think this means it's good? Still perplexed about the short, though...
If a light sleeper sleeps lighter with a light on, does a hard sleeper sleep harder with a hard on?

User avatar
trashtruck
Posts: 236
Joined: Fri Aug 31, 2012 7:55 pm
Location: albany, New York
Motorcycle: 1982 gl1100 interstate

Re: '80 GL1100 electrical issue

Postby trashtruck » Mon Apr 08, 2013 4:41 pm

if the bike is in gear and the neutral light is on then no, something isnt right. the wiring diagram does indicate that the 7 volt reg ties into the guage lights via br/b wire. none of the guage lights work? the neutral/fuel/oil fuse i believe is the same one that the 7v reg uses so yes i would suspect bad 7v reg. hope these help
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WHAT IS THE SPEED OF DARK?

User avatar
sam6942
Posts: 22
Joined: Fri Dec 31, 2010 12:26 am
Location: Honolulu, Youknowwhere
Motorcycle: Grandpa's 1980 GL1100
1979 Yamaha XS1100

Re: '80 GL1100 electrical issue

Postby sam6942 » Mon Apr 08, 2013 6:51 pm

Well, when it's in neutral the bike starts just fine. Only in gear does it come on when I hit the starter- Makes me think it's telling me to put it in neutral or pull the clutch. And I have all the drawings, the trick is that everything looks good... and I think the instrument lights are fine, I think they all happened to go at the same time.
If a light sleeper sleeps lighter with a light on, does a hard sleeper sleep harder with a hard on?

User avatar
sam6942
Posts: 22
Joined: Fri Dec 31, 2010 12:26 am
Location: Honolulu, Youknowwhere
Motorcycle: Grandpa's 1980 GL1100
1979 Yamaha XS1100

Re: '80 GL1100 electrical issue

Postby sam6942 » Wed Apr 10, 2013 8:32 pm

Alright, started going one by one disconnecting the components. It's the 7V reg after all :roll:.. But thanks for the assist! Now to get one so I can cross this off my list. Next is getting her idling right :? .. One of these days! 8-) Oh well, my XS11 has done me well so far.. The end goal is to have a full-up travelling rig with the GL and the camp trailer I have, and then dress down the XS and have that for commuting.
If a light sleeper sleeps lighter with a light on, does a hard sleeper sleep harder with a hard on?

User avatar
sam6942
Posts: 22
Joined: Fri Dec 31, 2010 12:26 am
Location: Honolulu, Youknowwhere
Motorcycle: Grandpa's 1980 GL1100
1979 Yamaha XS1100

Re: '80 GL1100 electrical issue

Postby sam6942 » Sun Apr 14, 2013 6:06 pm

So, 7V regulator should be here tomorrow (hopefully.. Thanks WingAdmin!), a friend just left from helping me bleed and clean the calipers for the brakes and try to get the engine right. Brakes are done, now that I sheared off part of the inner seal and thus need to tear that caliper down again because it leaks.. but now I'm trying to figure out the engine. Carbs have been torn down and cleaned, then rebuilt and put back together. It's running much smoother than it was the other day, but it's still not right. I have to hold on the throttle for it to idle at all (still warm after re-syncing), I can bottom out the idle screw but it seems like it wants more (obvious since I have to hold the throttle open). We decided it was probably the mixture screws, so we started loosening them 1/4 turn (360 rotation) at a time, and now it seems like they're about to fall out and I can"t figure out what's supposed to hold them in place while riding if they're set that far open. They're the replacement ones without the limiting "tab" on the head and of course I forgot the check the old ones before they came out. Anyone have any ideas? I can't seem to adjust it as far as it seems to want to go.
If a light sleeper sleeps lighter with a light on, does a hard sleeper sleep harder with a hard on?

User avatar
trashtruck
Posts: 236
Joined: Fri Aug 31, 2012 7:55 pm
Location: albany, New York
Motorcycle: 1982 gl1100 interstate

Re: '80 GL1100 electrical issue

Postby trashtruck » Sun Apr 14, 2013 6:14 pm

book says for brand new idle screws start @ 1-1/2 turns out. i cant see a reason for going more than 4 turns out unless you missed something in the cleaning.


WHAT IS THE SPEED OF DARK?


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