1978 KZ650 Dyna S - power

  • Terror
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1978 KZ650 Dyna S - power

07 Dec 2022 17:10 - 07 Dec 2022 17:11
#877597
Currently, planning out an install of a Dyna S (DS2-2) on my 1978 KZ650-B. I am trying to figure out the best place to pull power from...would the spot highlighted in red be a valid location to tap into?
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Last edit: 07 Dec 2022 17:11 by Terror.

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  • Mikaw
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Re: 1978 KZ650 Dyna S - power

07 Dec 2022 18:31
#877600
Use the yellow/red that powers the coils. It’s a “switched” power source.
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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  • zed1015
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Re: 1978 KZ650 Dyna S - power

08 Dec 2022 00:22
#877603
As already advised you should take it from the coil feed switched live as show in the fitting instructions.
 
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
www.kzrider.com/23-for-sale/611992-air-c...lide-mikunis?start=0





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  • Wookie58
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Re: 1978 KZ650 Dyna S - power

08 Dec 2022 00:28
#877604
Given the age etc of the bike, rather than adding more load to the original circuit it would make sense to fit a by-pass relay to power the Dyna and the Coils
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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  • Terror
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Re: 1978 KZ650 Dyna S - power

08 Dec 2022 14:11 - 08 Dec 2022 14:18
#877630
wrote:
Use the yellow/red that powers the coils. It’s a “switched” power source.

 
Isn't the brown wire also a switched power source? its just switched on and off by the ignition switch rather than the killswitch + ignition.

@wookie58 - what does that entail?
Last edit: 08 Dec 2022 14:18 by Terror.

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  • Scirocco
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Re: 1978 KZ650 Dyna S - power

08 Dec 2022 14:35 - 08 Dec 2022 14:43
#877632
Brown and yellow/red is switched power (ignition key on). The dyna has to be connect to yellow/red to be able to disconnect the power with the kill switch!
The wired george mod is to adding more load (voltage and current) to the original circuit and it would make sense to fit a by-pass relay to power the Dyna and the Coils!


 
My 1975 Z 1 B 900 Project

www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
Last edit: 08 Dec 2022 14:43 by Scirocco.
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Re: 1978 KZ650 Dyna S - power

08 Dec 2022 15:35
#877636
wrote:
wrote:
Use the yellow/red that powers the coils. It’s a “switched” power source.


 
Isn't the brown wire also a switched power source? its just switched on and off by the ignition switch rather than the killswitch + ignition.

@wookie58 - what does that entail?
Switching the coils through the kill switch is a safety feature so if you were trapped under the bike in an accident you can kill the motor before the back wheel eats your leg, I would fit the By-pass relay and switch it with the yellow/red so it is still controlled by the kill switch but takes the load off the circuit 
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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  • Mikaw
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Re: 1978 KZ650 Dyna S - power

08 Dec 2022 16:39
#877637
You can use a piggyback spade connector on the #67 terminal to power coils and the Dyna S modules. 
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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  • Terror
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Re: 1978 KZ650 Dyna S - power

08 Dec 2022 17:39
#877639
wrote:
Brown and yellow/red is switched power (ignition key on). The dyna has to be connect to yellow/red to be able to disconnect the power with the kill switch!
The wired george mod is to adding more load (voltage and current) to the original circuit and it would make sense to fit a by-pass relay to power the Dyna and the Coils!


 
 
Could i get a link to a schematic of how to wire in the by-pass?

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Re: 1978 KZ650 Dyna S - power

08 Dec 2022 18:06
#877640
Your just reposted it
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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  • Terror
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Re: 1978 KZ650 Dyna S - power

08 Dec 2022 19:03
#877643
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Your just reposted it
 
I guess what i meant to say is where would you mount the bypass in order to keep the wiring neat and clean.
 

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  • hardrockminer
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Re: 1978 KZ650 Dyna S - power

09 Dec 2022 05:44 - 09 Dec 2022 05:45
#877656
I mounted a bypass on the left inside edge of the battery box on my KZ1000.  I also use the brown wire for power, but the KZ1000 has a spare brown wire near the headlight.  I don't see it on your wiring diagram.  The mickey mouse attachment provided by Dyna is prone to failure.
I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.
Last edit: 09 Dec 2022 05:45 by hardrockminer.

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