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Author Topic: Neutral switch won't go out.  (Read 1647 times)

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Offline Taycodog

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Neutral switch won't go out.
« on: March 09, 2017, 07:43:51 AM »
I've had this problem on and off for years . The neutral light stays on all the time it goes off for a second now and then but always cones back on. It doesn't act differently in neutral either. I've removed tried cleaning it up and it seems to work for a while but always goes to the on mode. I've checked the  ground and replaced it a bunch of times. Could it be an internal thing in the tranny of just unfortunate luck ? It's been that way for a few years and every year I say I'm going to fix it but end up loving with it.
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Offline flybox1

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Re: Neutral switch won't go out.
« Reply #1 on: March 09, 2017, 07:58:41 AM »
Remove the wire from the N switch. 
Test the function of the harness/light by ground/un-grouding the tip of the wire to the engine case. 
Does it operate properly by hand?  If it does you might need a new N switch.


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Offline Don R

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Re: Neutral switch won't go out.
« Reply #2 on: March 09, 2017, 08:31:18 AM »
 On the early Goldwings carbon builds up on the switch causing the switch to carry current. some guys have connected a turn signal bulb in series to increase the load and that burns off the thin layer of carbon. I've never heard of this working on a sohc but it's a solid theory.
 Or new/different switch.
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Offline Deltarider

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Re: Neutral switch won't go out.
« Reply #3 on: March 09, 2017, 08:51:34 AM »
Could it be a chafed wire?
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Offline madmtnmotors

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Re: Neutral switch won't go out.
« Reply #4 on: March 09, 2017, 09:40:34 AM »
If it's the 77 CB750K then check the diode. I've replaced two lately.
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Offline Taycodog

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Re: Neutral switch won't go out.
« Reply #5 on: March 09, 2017, 08:59:07 PM »
Thanks I'll check that
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Offline Taycodog

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Re: Neutral switch won't go out.
« Reply #6 on: March 09, 2017, 09:07:51 PM »
Sorry it's the cb750 k-6
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'76 CB750 K
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'73 CL 350 scrambler
'69 BSA lightning

Offline scottly

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Re: Neutral switch won't go out.
« Reply #7 on: March 09, 2017, 09:17:29 PM »
If the diode is shorted, the neutral light will come on when the clutch lever is pulled in; If it comes on randomly, it's not the diode. A possible cause can be that the switch on the bottom of the motor isn't fully seated in the case. The O-ring needs to be installed into the recess in the case first, then the switch. If the shift drum's groove is not in exact alignment side-to-side with the end of the switch, the switch won't properly seat.
Like Flybox mentioned, you can isolate the problem between the switch and the wiring by disconnecting the switch wire; if the light still comes on, the problem is in the wiring, and if not, it's with the switch.
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Offline Taycodog

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Re: Neutral switch won't go out.
« Reply #8 on: March 09, 2017, 09:42:37 PM »
Thanks Guys , i have a few things to go on.

now if the snow would only melt.
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'76 CB750 K
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'73 CL 350 scrambler
'69 BSA lightning

Offline Smowzer

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Re: Neutral switch won't go out.
« Reply #9 on: January 13, 2021, 06:28:16 PM »
Having the same issue on my K6. Will be addressing it this week and I’ll try to report back. I know this is an old thread but thanks for the advice!
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