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post #1 of 3 (permalink) Old 06-04-2016, 03:53 PM Thread Starter
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Join Date: Aug 2009
Location: Silver Spring, Maryland, USA
Model: '99 Gold Wing SE
Posts: 2,184
GL1500 Neutral Light Bulb

I have read a lot about "No Neutral Light"

This might help someone understand how the neutral light circuit works.

GL1500 Neutral Light Circuit (1990 - 2000)

The reverse/start “5-amp” fuse provides input voltage “brown/white” wire to the reverse lever switch.

The reverse lever switch (when the reverse handle is down) provides input voltage “black/white” wire to the neutral light bulb.

This wire passes through 3 connectors:

1. 3-pin red connector behind the left fairing inner cover. (Near the reverse lever switch)

2. 14-pin black connector behind the left fairing lower cover. (Near the left radiator fan shroud)

3. 20-pin white connector behind the instrument panel.

The gear position “sensor” switch (when the transmission is in neutral) provides a ground “light green/red” wire through the reverse diode assembly to the neutral light bulb.

This wire passes through 5 connectors:

1. 20-pin white connector behind the instrument panel.

2. 14-pin white connector under the trunk.

3. 22-pin red connector under the seat.

4. 13-pin white connector at the rear of the right fairing pocket. (Behind the air compressor controls)

5. 6-pin black connector on the right radiator fan shroud.

Now you have a neutal light.................!!

Note 1: The neutral light is not part of the starting circuit. It is only a convience to let folks kmow the
transmission is in neutral. If the bulb was burned out, the bike would still start.

Note 2: The reverse lever switch also provides input voltage “black/white” wire through the reverse
diode assembly to activate “trigger” the reverse relay switch (which provides a ground to
activate “trigger” the starter relay A).

You could have a neutral light (which would indicate the reverse lever switch was good) and still have a starting issue if there was a faulty reverse
diode assembly or reverse relay switch (or other “ground” inputs to the reverse relay switch).

Are you confused yet.....??
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post #2 of 3 (permalink) Old 06-04-2016, 05:18 PM
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Join Date: Jun 2010
Location: Chilliwack, British Columbia, Canada
Model: 1984 Interstate "Canadian"
Posts: 6,854
I miss the good old days when motorcycles were simple.

You turned the key on if so equipped, pulled in the clutch just encase it was in gear, gave it a good kick and went riding.
AZgl1800 likes this.

Advise given here is free and comes with no warranty "Caveat emptor"

Ken.
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post #3 of 3 (permalink) Old 06-04-2016, 05:25 PM Thread Starter
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Join Date: Aug 2009
Location: Silver Spring, Maryland, USA
Model: '99 Gold Wing SE
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Neutral Light

That's what I do with my BSA...........!

Quote:
Originally Posted by Ken Bergen View Post
I miss the good old days when motorcycles were simple.

You turned the key on if so equipped, pulled in the clutch just encase it was in gear, gave it a good kick and went riding.
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