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83 KZ 750 LTD neutral light brake light and horn

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18 Jul 2022 06:13 #870531 by Keith23
83 KZ 750 LTD neutral light brake light and horn was created by Keith23
Brake light, neutral light and horn all stopped working at the same time. Can’t seem to find the cause. Any advise would be greatly appreciated. Thanks in advance 

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  • Wookie58
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18 Jul 2022 07:09 #870536 by Wookie58
Replied by Wookie58 on topic 83 KZ 750 LTD neutral light brake light and horn
Where in the world are you Keith, I will look at a wiring diagram later if I get time but it would help to know if it a US or European build spec as the wiring isn't the same
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca

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18 Jul 2022 07:51 #870541 by Keith23
Replied by Keith23 on topic 83 KZ 750 LTD neutral light brake light and horn
I’m in Georgia the bike is US. THANKS!

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  • Scirocco
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18 Jul 2022 08:36 #870547 by Scirocco
Replied by Scirocco on topic 83 KZ 750 LTD neutral light brake light and horn
Check the 20 Amp fuse in the fuse holder.

 
My 1975 Z 1 B 900 Project

www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode

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18 Jul 2022 09:32 #870551 by Wookie58
Replied by Wookie58 on topic 83 KZ 750 LTD neutral light brake light and horn

Brake light, neutral light and horn all stopped working at the same time. Can’t seem to find the cause. Any advise would be greatly appreciated. Thanks in advance 


 
OK two questions
  • Do you have ignition voltage at the two 10amp fuses (green circle) if yes what is the voltage ?
  • Do you have ignition voltage at the Brown wire going into the regulator/rectifier (other green circle) if yes what is the voltage ?
If the answer to both the above questions is no check the connector on the standalone brown wire at the ign switch (red circle)
 
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
The following user(s) said Thank You: JR

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18 Jul 2022 10:43 - 18 Jul 2022 10:44 #870557 by JR
Replied by JR on topic 83 KZ 750 LTD neutral light brake light and horn
You will find the bullet connector Wookie58 circled in the headlight bucket. Your bike wiring very similar to mine. 

 
1980 kz750E1, Delkevic exhaust
Last edit: 18 Jul 2022 10:44 by JR.
The following user(s) said Thank You: Wookie58

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  • Scirocco
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18 Jul 2022 15:27 - 18 Jul 2022 15:35 #870574 by Scirocco
Replied by Scirocco on topic 83 KZ 750 LTD neutral light brake light and horn
If you look closer into the wiring diagram, you will see that the white wire (20 Amp fuse) will power the brown and yellow wire in the ignition "ON" position.

 
My 1975 Z 1 B 900 Project

www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
Last edit: 18 Jul 2022 15:35 by Scirocco.

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18 Jul 2022 15:43 - 18 Jul 2022 15:47 #870575 by Wookie58
Replied by Wookie58 on topic 83 KZ 750 LTD neutral light brake light and horn
That is correct but in that case there would be no ignition circuit which isn't the fault that has been raised, this is also why I asked him to confirm no power at the RR and the 10amp fuses
The area I have highlighted would only show an obvious effect on the faults described (although it wouldn't charge the battery and some other lighting wouldn't work)
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
Last edit: 18 Jul 2022 15:47 by Wookie58.

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21 Jul 2022 18:48 #870817 by Keith23
Replied by Keith23 on topic 83 KZ 750 LTD neutral light brake light and horn
Got the horn and brake light going but don’t get any fire to the spark plugs?confused.  

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22 Jul 2022 00:13 #870827 by Wookie58
Replied by Wookie58 on topic 83 KZ 750 LTD neutral light brake light and horn
When you first posted about the neutral light etc was it starting ok, what did you find for the horn and brake light ?
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
The following user(s) said Thank You: Keith23

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22 Jul 2022 00:30 #870829 by Keith23
Replied by Keith23 on topic 83 KZ 750 LTD neutral light brake light and horn
Thanks Wookie for your assistance. I had a blown fuse for the horn//ignition. Bad connection for neutral light. Now I’m not getting any spark to the plugs. Starter is turning but won’t crank. I have to check the coils I guess. Is there a chance that the points are causing it not not get fire? I’m at a loss. Any ideas?
thanks in advance 

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22 Jul 2022 00:44 #870831 by Wookie58
Replied by Wookie58 on topic 83 KZ 750 LTD neutral light brake light and horn
A couple of questions
Was it starting when you first posted your problem ?
Which fuse was blown ?
Where was the connection problem for the neutral light ?
Have you checked that you haven't disturbed something doing the work you have done ?
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca

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