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No beep beep 07 Oct 2021 19:40 #856344

  • motoaddict
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Hi Gang, 

So the horn does not seem to work on my kz900. I did all the usual trouble shooting. Used a multimeter and checked for power at the horn when I pressed the button and nothing. Ok then I took apart the thoroughly inspected the left hand controls and confirmed the button contacts seem in good shape. Next I looked at the wiring diagram and saw that the horn button is only  wired to the ground leg of the circuit which is grounded to the control housing itself through a little tab that extends out of the button inside the controls. Now I did change the handle bars to black painted bars from bikemaster and I am wondering did I somehow isolate the ground for the horn? Was the left hand controls grounded to the old KZ bars which made its way back to the chassis somehow? Has anyone else experienced this and did you have to grind off some paint under the controls to ground it? 

Thanks!

   
1976 KZ900
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No beep beep 07 Oct 2021 20:25 #856347

  • Nerdy
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Now I did change the handle bars to black painted bars from bikemaster and I am wondering did I somehow isolate the ground for the horn? Was the left hand controls grounded to the old KZ bars which made its way back to the chassis somehow? Has anyone else experienced this and did you have to grind off some paint under the controls to ground it?

 

Yes. Yes. Yes. And yes.

I knew what you did before you described what you did because it's also what I did.
1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R

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No beep beep 08 Oct 2021 03:56 #856351

  • motoaddict
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Well then that is what I am about to did! I also thought about just adding a thin gauge ground wire and run it back to the chassis with the rest of the control wires and skip modifiing the bars. 

Thanks!

 
1976 KZ900

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No beep beep 08 Oct 2021 04:10 #856352

  • Warren3200gt
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You just need to scrape a bit of the bars coating off so that the control housing grounds on the bars again.
once fitted the scrape marks are hidden under the control housing. 

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No beep beep 13 Oct 2021 04:19 #856577

  • motoaddict
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I ended up adding a wire to the controls and then running it out to the chassis. Works great now. 

 
1976 KZ900
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No beep beep 13 Oct 2021 05:40 #856580

  • martin_csr
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The wire is outside the protective sleeve?

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No beep beep 20 Oct 2021 04:09 #856829

  • motoaddict
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No, I wrapped electrical tape all around the length of the bigger bundle to secure it. 

 
1976 KZ900

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No beep beep 20 Oct 2021 05:24 #856832

  • Mikaw
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Just an FYI. Electrical tape turns gooey, sticky. Might be better to remove the tape before it gets like that and fish the ground wire into the existing harness sleeve.
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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No beep beep 20 Oct 2021 05:31 #856833

  • TexasKZ
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1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
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