Electrical Conundrum


Information and questions on GL1500 Goldwings (1988-2000)
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cmince
Posts: 4
Joined: Sun Mar 29, 2015 7:52 am
Location: Detroit, Michigan
Motorcycle: 1996 GL1500 SE

Electrical Conundrum

Postby cmince » Sun Mar 29, 2015 8:15 am



My last ride of last season I noticed the instrument panel had stopped working properly, but it was being put away for the winter so I let it go until this spring. The previous owner had installed quite a few auxiliary lights and they stopped working as well, I assumed it was related. So this spring I have been rewiring all of the auxiliary lights among other items. I have them working well now, but the Instrument panel still has an issue, and I noticed it affects my Tail lights as well. I have all of the auxiliary lights running through switches that are turned off, so I know they are not the culprit. When I first turn on the ignition the Instrument Panel lights up, the fuel light and oil pressure lights come on, the fuel and temp gauges work, the Tail lights and side lights all come on, for about 10 seconds, then I hear a click, like a relay tripping, and they all go off. Turning the Ignition switch off and back on does no good, but if you let it sit for about five or ten minutes, then turn the ignition switch back on the same thing happens again, the lights, and instrument panel work for about five or ten seconds there is a click and they all go off again. The brake lights, headlight, and turn signals all continue to work normally. The Tach, and Speedometer work as well as the back lighting for the Instrument panel. I have verified with a meter that all the fuses are in good working order, I am not sure where to go from here.



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seelyark1
Posts: 465
Joined: Sun May 27, 2012 1:57 pm
Location: Dunnellon, Florida
Motorcycle: 2000 GL1500 SE
1998 GL1500 SE Totaled
1984 VT500C
1967 CB550-4

Re: Electrical Conundrum

Postby seelyark1 » Sun Mar 29, 2015 9:06 am

It is hard to tell from all the differient symtems you are saying, but most of it sounds like the Tail main relay is at fault. Most if not all the instrument lights are supposed to come on as a test when you turn on the ignition, and go off in a few seconds. You may want to swap the Tail main relay with another and see if your problem moves with it. These relays are available through this site thanks to Admin.
Ride safe, and smart. Asphalt is like #1 grit sandpaper. Dave

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CMReynolds1
Posts: 647
Joined: Wed Sep 24, 2014 5:56 pm
Location: Oregon
Motorcycle: 2013 F6B

Re: Electrical Conundrum

Postby CMReynolds1 » Sun Mar 29, 2015 9:21 am

I agree on the relay, but also, not knowing your Model year I don't know if you have any circuit breakers on the line to the tail and dash lights. Your explanation sounds just like a non-resettable circuit breaker opening. They will open due to shorts or heat and then reset when the line they protect is de-energized and they can cool. I would consider looking at the wiring schematic and find what circuit breaker(s) are associated with the lights that are shutting off and make sure nothing is causing the cutout and if that is good, then replace it. They can and do go bad on their own.
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seelyark1
Posts: 465
Joined: Sun May 27, 2012 1:57 pm
Location: Dunnellon, Florida
Motorcycle: 2000 GL1500 SE
1998 GL1500 SE Totaled
1984 VT500C
1967 CB550-4

Re: Electrical Conundrum

Postby seelyark1 » Sun Mar 29, 2015 10:00 am

I assumed he is talking about a 96 SE, but You know about Ass u me :lol: The Tail Main does both of these circuits unless I am reading it wrong. Worst part of this one is having to loosen the saddle bag to get at the relays. That means the seat too. All that for a plug in relay. If only they were an inch farther forward. :lol: But swapping one breaker for another to see if it fixes is simple.
Ride safe, and smart. Asphalt is like #1 grit sandpaper. Dave

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CMReynolds1
Posts: 647
Joined: Wed Sep 24, 2014 5:56 pm
Location: Oregon
Motorcycle: 2013 F6B

Re: Electrical Conundrum

Postby CMReynolds1 » Sun Mar 29, 2015 10:29 am

You are absolutely correct. The old adage, Keep it simple, stupid, KISS! I am a firm believer in that.
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Ride Safe,
Taz


TF 116, RivRon 512, Can Tho, S. Vietnam, 8/66-/9/68, GM(G)2

cmince
Posts: 4
Joined: Sun Mar 29, 2015 7:52 am
Location: Detroit, Michigan
Motorcycle: 1996 GL1500 SE

Re: Electrical Conundrum

Postby cmince » Mon Mar 30, 2015 8:04 pm

So I found out what is causing the click when the lights go out. It is the front cornering light relay mounted on the frame under the right side of the fairing., I am going to try tracing back through that circuit and see if I can find the short.

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CMReynolds1
Posts: 647
Joined: Wed Sep 24, 2014 5:56 pm
Location: Oregon
Motorcycle: 2013 F6B

Re: Electrical Conundrum

Postby CMReynolds1 » Mon Mar 30, 2015 8:14 pm

Very good, you have a good starting point. Keep us posted!
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Ride Safe,
Taz


TF 116, RivRon 512, Can Tho, S. Vietnam, 8/66-/9/68, GM(G)2

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virgilmobile
Posts: 7647
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Electrical Conundrum

Postby virgilmobile » Tue Mar 31, 2015 2:11 pm

Point of interest.the cornering relay(s)...both of them.They are powered on with the key.Each one powers off when that side turn signal is operated.Check the power feeding the coil of that relay.Does it loose power when it "clicks" or is the turn signal module clicking it off.
This may lead to the direction of the fault.

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virgilmobile
Posts: 7647
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Electrical Conundrum

Postby virgilmobile » Tue Mar 31, 2015 2:18 pm

There's one other thing that comes to mind.I have seen pictures of a "binding" plug failing.
This plug(s)..one on each side,connects several green ground wires together and then to a frame lug.
They are well hidden too.Both of mine were under the tape of the harness.
There location is on the upper main harness on both sides,just in front of the seat area.Somewhere on this site are pictures of it.

cmince
Posts: 4
Joined: Sun Mar 29, 2015 7:52 am
Location: Detroit, Michigan
Motorcycle: 1996 GL1500 SE

Re: Electrical Conundrum

Postby cmince » Tue Mar 31, 2015 7:41 pm

Well Seelyark1, I bow before the master "I am not worthy". I was just about to start taking my fairing apart, to try and track down the issue, and I thought let's try the easy stuff first. I swapped the Main Taillight relay with one of the others and the problem went away, I swapped the relay back to verify and the the problem did not return. I can only venture a guess, but either the relay was loose, or there was some dirt in the connector, and the swap cured it. I want to thank everyone that participated, but a big Special Thank You to Seelyark1 for steering me in the right direction.

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seelyark1
Posts: 465
Joined: Sun May 27, 2012 1:57 pm
Location: Dunnellon, Florida
Motorcycle: 2000 GL1500 SE
1998 GL1500 SE Totaled
1984 VT500C
1967 CB550-4

Re: Electrical Conundrum

Postby seelyark1 » Tue Mar 31, 2015 10:44 pm

I'm glad that I could help. I just got the manual, and had to see how well it works out. ;)


Ride safe, and smart. Asphalt is like #1 grit sandpaper. Dave


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