Wiring diagram with munit - REVIEW
- F64
-
- Offline
- User
-
Registered
- 81-KZ440D2
- Posts: 1129
- Thanks: 409
Re: Wiring diagram with munit - REVIEW
14 May 2025 06:30
Yep!!
looks like menu #11
i'll be changing my setting over the weekend.
many thanks!!!!
looks like menu #11
i'll be changing my setting over the weekend.
many thanks!!!!
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
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
Motogadget m-unit blue installed 2017.
LIC, NY
Please Log in or Create an account to join the conversation.
- gordone
-
Topic Author
- Offline
- Sustaining Member
-
Registered
- Posts: 1476
- Thanks: 83
Re: Wiring diagram with munit - REVIEW
20 May 2025 01:08 - 20 May 2025 01:08
Right now, my RPM reading is dead on the speedometer. I want to make sure I understand the settings correctly:

Thanks for your help!
- Should I set it to "0.5" (2 RPM signals per 1 ignition)?
- My bike has two coils and four cylinders, with the coils firing alternately (since each coil connects to two spark plugs).

Thanks for your help!
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 20 May 2025 01:08 by gordone.
Please Log in or Create an account to join the conversation.
- Wookie58
-
- Away
- Moderator
-
Registered
- Posts: 4974
- Thanks: 3027
Re: Wiring diagram with munit - REVIEW
20 May 2025 02:08
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
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: gordone
Please Log in or Create an account to join the conversation.
- gordone
-
Topic Author
- Offline
- Sustaining Member
-
Registered
- Posts: 1476
- Thanks: 83
Re: Wiring diagram with munit - REVIEW
20 May 2025 02:51Easy to get confused thinking about these things

I'll test it — right now the RPM speedo is dead, so I want to configure it correctly before I start troubleshooting the wiring.
I guess I can move the shaft manually to activate the pickup sensor and measure 12V at the pickup... Hopefully, I won't need to invert the signal or anything.
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Please Log in or Create an account to join the conversation.
- Scirocco
-
- Offline
- Premium Member
-
Registered
- Never change a running system
- Posts: 4420
- Thanks: 2268
Re: Wiring diagram with munit - REVIEW
20 May 2025 14:49
The noisy speedo signal could be tricky and could end into a jumping needle, don´t ask why i know it......
An ABS signal converter connected to one of the ignition pic-ups was my final cure.
An ABS signal converter connected to one of the ignition pic-ups was my final cure.
My 1975 Z 1 B 900 Project
www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
Please Log in or Create an account to join the conversation.
- gordone
-
Topic Author
- Offline
- Sustaining Member
-
Registered
- Posts: 1476
- Thanks: 83
Re: Wiring diagram with munit - REVIEW
20 May 2025 22:56 - 20 May 2025 22:57The noisy speedo signal could be tricky and could end into a jumping needle, don´t ask why i know it......
An ABS signal converter connected to one of the ignition pic-ups was my final cure.
Thank you for the information — I’ll keep it in mind.
Right now, my problem is that it's completely dead

I tried changing the configuration yesterday, but it's still completely dead...If I disconnect the RPM pickup cable that goes to the speedo and measure the voltage, and then remove the spark plug and turn the shaft manually with a torque wrench —
Is it correct to assume that I will measure 12–13V when the specific pickup sensor detects the metal on the shaft?
And if I leave it in that position, I should get a constant 12–13V?
I just want to verify that the cabling from the speedo to the pickup sensor is correct.
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 20 May 2025 22:57 by gordone.
Please Log in or Create an account to join the conversation.
- Wookie58
-
- Away
- Moderator
-
Registered
- Posts: 4974
- Thanks: 3027
Re: Wiring diagram with munit - REVIEW
21 May 2025 02:01 - 21 May 2025 02:01
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
Last edit: 21 May 2025 02:01 by Wookie58.
Please Log in or Create an account to join the conversation.
- gordone
-
Topic Author
- Offline
- Sustaining Member
-
Registered
- Posts: 1476
- Thanks: 83
Re: Wiring diagram with munit - REVIEW
21 May 2025 03:30 - 21 May 2025 03:31
Thank you! :)The engine is running (though I haven’t test-driven it yet), and all four pipes are getting hot. :)I tried both configurations for positive and negative detection yesterday, but without any success.
I can try running a temporary cable from the coil positive to the RPM pickup cable going to the speedo and see what happens...I’ve routed all the cables nicely, so I hope I don’t have to rewire anything.
Maybe I can add a type of relay (same as Scirocco ) and then use the signal coming from the pickups sensor itself?
I can try running a temporary cable from the coil positive to the RPM pickup cable going to the speedo and see what happens...I’ve routed all the cables nicely, so I hope I don’t have to rewire anything.

Maybe I can add a type of relay (same as Scirocco ) and then use the signal coming from the pickups sensor itself?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 21 May 2025 03:31 by gordone.
Please Log in or Create an account to join the conversation.
- Wookie58
-
- Away
- Moderator
-
Registered
- Posts: 4974
- Thanks: 3027
Re: Wiring diagram with munit - REVIEW
21 May 2025 03:56
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
Please Log in or Create an account to join the conversation.
- gordone
-
Topic Author
- Offline
- Sustaining Member
-
Registered
- Posts: 1476
- Thanks: 83
Re: Wiring diagram with munit - REVIEW
21 May 2025 09:29okey, sorry but I diden’t understad what I shall try? Connect it to negative cable going two both coils?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Please Log in or Create an account to join the conversation.
- Wookie58
-
- Away
- Moderator
-
Registered
- Posts: 4974
- Thanks: 3027
Re: Wiring diagram with munit - REVIEW
21 May 2025 09:32 - 21 May 2025 09:36No - connect it to the switched side of the 1&4 coil (black wire) as per the KZ1000 diagramokey, sorry but I diden’t understad what I shall try? Connect it to negative cable going two both coils?Scirocco's issue was a fluctuating "speedo" you could also try the below

You could push it in the back of the plug for the igniter to test
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
Last edit: 21 May 2025 09:36 by Wookie58.
The following user(s) said Thank You: gordone
Please Log in or Create an account to join the conversation.
- gordone
-
Topic Author
- Offline
- Sustaining Member
-
Registered
- Posts: 1476
- Thanks: 83
Re: Wiring diagram with munit - REVIEW
21 May 2025 09:48 - 21 May 2025 09:49
Will test and report 
sorry, diden’t saw the text above the diagram!

sorry, diden’t saw the text above the diagram!
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 21 May 2025 09:49 by gordone.
The following user(s) said Thank You: Wookie58
Please Log in or Create an account to join the conversation.
Moderators: Street Fighter LTD