oil and neutral light won't come on


Information and questions on GL1100 Goldwings (1980-1983)
  • Sponsored Links
User avatar
echinus1988
Posts: 112
Joined: Fri Jul 19, 2013 7:53 pm
Location: Denver, Colorado
Motorcycle: 1982 GL1100 Aspencade

oil and neutral light won't come on

Postby echinus1988 » Thu Aug 21, 2014 8:18 pm



I have a 1982 Aspencade that I am working on.

When I turn on the key, neither the oil or the neutral lights come on. The only time the neutral light comes on is when I try to start in gear without the clutch pulled in.

I figure this probably has something to do with the compressor not working since I understand it's tied in with the neutral light. I have the schematic but haven't figured out where the problem is yet.

I have checked all fuses for operation.

Any suggestions of where to start?

Thank you.
Steve



User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: oil and neutral light won't come on

Postby WingAdmin » Fri Aug 22, 2014 10:25 am

The power for the oil and neutral lights comes from the engine circuit. I'm assuming the bike will start and run normally, so if that is the case, the fuse (and circuit) are going to be OK.

Both the oil and neutral lights share a power source with the low air pressure indicator light - does that one also not function?

Your bike is functioning as if the connector shown below (with red arrow) is not connected. In this case, when you press the starter button, it attempts to find a ground for the starter relay through either the clutch switch or the neutral switch. If neither of those is closed, it will feed the 12 volts through the neutral switch diode to the neutral light, which normally will have 12 volts on the other side of it, so nothing will happen.

GL1100 Neutral Light Circuit
GL1100 Neutral Light Circuit


In your case, there is no 12 volt feed on the high side of the neutral light, so the power feeds backward through the neutral light, causing it to light up. From there it feeds probably to the oil warning light, and from there to ground through the oil pressure switch. I suspect your oil pressure light may also be lighting up when you hit the starter?

In any case, you need to find out why no power is making it through that connector. Open the dash and follow the brown/white wire that lights up the neutral light. With the bike turned to ON, measure the voltage on that brown/white wire. It will be zero - so start following it back, through the nine-pin connector, until you find the point at which you have voltage. Likely, it will be a connector - with 12 volts on the brown/white wire on one side of the connector, and nothing on the other side of the connector. This would indicate the connector needs to be cleaned/fixed.

User avatar
echinus1988
Posts: 112
Joined: Fri Jul 19, 2013 7:53 pm
Location: Denver, Colorado
Motorcycle: 1982 GL1100 Aspencade

Re: oil and neutral light won't come on

Postby echinus1988 » Fri Aug 22, 2014 9:04 pm

I cannot find a color schematic for the 1982 aspencade, can you tell me where you got yours?

User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: oil and neutral light won't come on

Postby WingAdmin » Sun Aug 24, 2014 4:52 pm

echinus1988 wrote:I cannot find a color schematic for the 1982 aspencade, can you tell me where you got yours?


I haven't seen one either, but in terms of the oil/neutral lights, the Aspencade is the same as the Standard and Interstate.




Return to “GL1100 Information & Questions”




Who is online

Users browsing this forum: davidwinger and 2 guests