new to me 1976 KZ 900, wires go where?

Mikaw
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 12:52 - 20 Dec 2021 13:06

I think the small black from the rectifier is supposed to go to chassis ground. Normally it goes the the seat lock. All small gauge black and black/yellow are ground. The only positive black is the heavy gauge from the starter to the relay.

See red arrow

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.

Last edit: 20 Dec 2021 13:06 by Mikaw.

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F64
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 13:02 - 20 Dec 2021 13:05

#859362

That thin black wire on the same terminal as the thick black wire... Does that thick black wire go to the battery or the starter?

81-KZ440-D2.
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
Motogadget m-unit blue installed 2017.
LIC, NY

Last edit: 20 Dec 2021 13:05 by F64.

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Mikaw
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 13:10

#859363

wrote:

That thin black wire on the same terminal as the thick black wire... Does that thick black wire go to the battery or the starter?

Thin black from rectifier goes to chassis ground. Heavy Black is positive for starter.

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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F64
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 13:16 - 20 Dec 2021 13:19

#859364

The thin black wire that goes to the rectifier will need to be on the large relay terminal going to the battery. Not the large relay terminal going to the starter.
That starter terminal only gets voltage when the starter button is pushed.

Mikaw,
Kawasaki throws you a curve ball at the starter relay.
The 12v positive coming from the starter button is black.
The ground is black with a yellow stripe.

81-KZ440-D2.
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
Motogadget m-unit blue installed 2017.
LIC, NY

Last edit: 20 Dec 2021 13:19 by F64.

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Mikaw
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 13:30 - 20 Dec 2021 13:31

#859365

wrote:

The thin black wire that goes to the rectifier will need to be on the large relay terminal going to the battery. Not the large relay terminal going to the starter. I’m gonna challenge you on this. That black from the rectifier is ground.
That starter terminal only gets voltage when the starter button is pushed.

Mikaw,
Kawasaki throws you a curve ball at the starter relay.
The 12v positive coming from the starter button is black.
The ground is black with a yellow stripe.

See this diagram.

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.

Last edit: 20 Dec 2021 13:31 by Mikaw.

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Mikaw
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 13:33

#859366

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.

The following user(s) said Thank You: rscone11

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rscone11
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 13:41

#859367

Thanks, this bike is missing the seat lock, one other part I need to order. So which wire should go where? @F64 what about the loose wire at the bottom I have taped up?

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Mikaw
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 13:45

#859368

Here’s another schematic. Showing that black is chassis ground.

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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Mikaw
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 13:51

#859369

What colors and how many are in the connector where the black comes out of?

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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F64
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 13:58 - 20 Dec 2021 13:59

#859371

Mikaw,
I'm only dealing with the starter relay right now. I want to get the bike started first.

The rectifier is not tied into the relay directly.
It can be, but Kawasaki did it differently.

The rectifier has a white wire spliced in with the white wire after the fuse and a black wire going to ground.

Rscone,
Where does the loose black wire go?

81-KZ440-D2.
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
Motogadget m-unit blue installed 2017.
LIC, NY

Last edit: 20 Dec 2021 13:59 by F64.

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Mikaw
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 14:10

#859373

wrote:

Mikaw,
I'm only dealing with the starter relay right now. I want to get the bike started first.

The rectifier is not tied into the relay directly.
It can be, but Kawasaki did it differently.

The rectifier has a white wire spliced in with the white wire after the fuse and a black wire going to ground.

Rscone,
Where does the loose black wire go?

I understand but you can’t put the black from the rectifier to a positive. Direct short. The way his bike is currently wired the rectifier black (ground) is to a 12 positive.

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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rscone11
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Re: new to me 1976 KZ 900, wires go where?

20 Dec 2021 14:11

#859374

Ok, I removed the black ground wire from the starter relay. It does have the length to reach the seat lock where it appears is a screw hole for it to attach.
I am attaching photos of the plug it is from and I assume is the rectifier(gizmo)

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