Neutral Light


Information and questions on GL1100 Goldwings (1980-1983)
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t_reister
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Neutral Light

Postby t_reister » Sat Sep 22, 2012 11:14 am



I just installed a new starter relay, my bike starts and charges like a champion now but, my neutral light comes on everytime the clutch lever is pulled. The light also comes on when the transmission is in neutral, like it is supposed to. I got the relay off ebay and it plugged right in. Has anybody had this problem with their 81 Interstate or have a fix for the clutch lever situation??



goldminerusa
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Re: Neutral Light

Postby goldminerusa » Sat Sep 22, 2012 7:11 pm

Since the light is coming on then there is voltage in the circuit. Check the 4 pin connector and make sure the pins are all seated and the wires are in the right places, looking at the conn., Red - left outside, Green/Red left inside, Red/White- right outside, Yellow/Green? - right inside. Remove the neg. battery cable first. And / or check against a service manual. You don`t say if this is a new problem.

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t_reister
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Re: Neutral Light

Postby t_reister » Sat Sep 22, 2012 10:29 pm

The light didn't come on before I had changed the relay

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t_reister
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Re: Neutral Light

Postby t_reister » Sat Sep 22, 2012 11:10 pm

I have been reading some other posts and they talk of a diode in the neutral wire. Does the 81 have it and where would it be. The wiring diagram shows a "tube" just after the neutral switch, is it there?

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Johnyy Smoke
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Re: Neutral Light

Postby Johnyy Smoke » Sun Sep 23, 2012 5:50 am

I dont think it is at the "R Tube" as I belive that is only heat shrink to protect the wire as it bends around the motor.
The light only comes on when you pull the clutch? It dosent stay on all the time?Regards,Johnyy

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t_reister
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Re: Neutral Light

Postby t_reister » Sun Sep 23, 2012 9:26 am

The light comes on when in neutral and when the clutch lever is pulled.

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thrasherg
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Re: Neutral Light

Postby thrasherg » Sun Sep 23, 2012 12:25 pm

As stated, the diode in the clutch line is either defective or has been shorted out when you changed the relay.. The diode is there to prevent the neutral light coming on when the clutch lever is pulled in. You need to follow the wires from the clutch switch until you reach the diode and then check if the diode is working correctly (with a multimeter). If it is then you have shorted it out, and you need to find which wire is wrong. If the diode is defective you can easily replace it with a power diode from Fry's, Tandy, radio shack, etc..

Gary

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t_reister
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Re: Neutral Light

Postby t_reister » Sun Sep 23, 2012 1:25 pm

Thanks, I'll look for the diode.

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t_reister
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Re: Neutral Light

Postby t_reister » Mon Sep 24, 2012 7:48 am

The diode is located on the main wiring harness (on a GL1100) under (or below) the fake tank. Index #1 in this diagram. Looking at the diagram on page 17-3 in the Honda manual, the neutral light has a constant +12v applied to it. The neutral switch applies the ground (or - ) to the lamp and through the diode applies a ground to one side of the solenoid, allowing the starter to operate. The clutch switch will also enable the solenoid, but the diode prevents it applying a ground to the neutral light. If the diode is bad (open) when in neutral the light lites but wont start without the clutch switch being enabled. If the diode is bad (shorted) the neutral light will light every time you pull in the clutch. This is of course assuming everything else is working properly.
Attachments
Item #1 is the diode
Item #1 is the diode

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scotterichmond
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Re: Neutral Light

Postby scotterichmond » Mon Sep 24, 2012 8:36 am

t_reister wrote:The diode is located on the main wiring harness (on a GL1100) under (or below) the fake tank. Index #1 in this diagram. Looking at the diagram on page 17-3 in the Honda manual, the neutral light has a constant +12v applied to it. The neutral switch applies the ground (or - ) to the lamp and through the diode applies a ground to one side of the solenoid, allowing the starter to operate. The clutch switch will also enable the solenoid, but the diode prevents it applying a ground to the neutral light. If the diode is bad (open) when in neutral the light lites but wont start without the clutch switch being enabled. If the diode is bad (shorted) the neutral light will light every time you pull in the clutch. This is of course assuming everything else is working properly.


you are dead on correct, now you just need to find the diode and then a replacement. I would think Radio Shack could help.

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Re: Neutral Light

Postby WingAdmin » Mon Sep 24, 2012 2:24 pm

One of these will work perfectly, and it's way oversized, so you will likely never have to replace it ever again:

http://www.jameco.com/webapp/wcs/stores ... 1559113_-1

You'll have to solder the leads into place where the old one went.

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t_reister
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Re: Neutral Light

Postby t_reister » Sat Apr 27, 2013 3:04 pm

I got the diode, soldered some flat tangs to the ends and plugged it in. I used some silicone to seal out water and weather. Works like a champion. Thanks all for the great advise!!!




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