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Author Topic: CB750 kill switch wiring.  (Read 8171 times)

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Offline oldhatt45

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Re: CB750 kill switch wiring.
« Reply #25 on: January 12, 2016, 07:59:28 am »
Ron,

You're Welcome.  I know that electrical schematics can be difficult to understand for some.
Glad the diagram I attached helped out. 

Charlie
PS:  I also have a diagram more specific to the K1-K4 models if you want or need it.  :)
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Offline Phoenix

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Re: CB750 kill switch wiring.
« Reply #26 on: January 12, 2016, 08:41:22 am »
Charlie
Could you please post the schematic for the k1-4.  The one you posted is great.
Thanks,
Ed
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Ed Spengeman
Indy
1971 CB750K1 (Stock)
1973 CB350 Twin  (Gone)

Offline oldhatt45

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Re: CB750 kill switch wiring.
« Reply #27 on: January 12, 2016, 09:14:02 am »
Phoenix,


Here is the schematic for the K1-K4.
You're Welcome.  :)

Charlie
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Offline Mantree

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Re: CB750 kill switch wiring.
« Reply #28 on: January 12, 2016, 03:13:32 pm »
Quote from: MCRider on January 11, 2016, 05:13:46 pm
Indulge my ignorance. Is there a common hot wire for both coils. Or if you snip one, won't the other still fire?
The coils are both fed by one wire that splits off to both coils

Sent from my ME302KL using Tapatalk

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Offline edwardmorris

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Re: CB750 kill switch wiring.
« Reply #29 on: January 17, 2016, 09:17:15 pm »
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Offline Airborne 82nd

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Re: CB750 kill switch wiring.
« Reply #30 on: January 18, 2016, 12:33:41 am »
Quote from: oldhatt45 on January 12, 2016, 09:14:02 am
Phoenix,


Here is the schematic for the K1-K4.
You're Welcome.  :)

Charlie


Wouldn't happen to have a drawing like that for a 750K8 to post?
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Offline oldhatt45

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Re: CB750 kill switch wiring.
« Reply #31 on: January 18, 2016, 06:21:56 am »
Airborne,

I just looked at the K8 wiring diagram and it looks like very little changed
According to this schematic http://manuals.sohc4.net/cb750k/technical_reference/WD750K8.jpg
The wire colors for  what you need to tap into look to be the same as the K6 diagram I originally posted further up in this thread.

If you're going to do the relay mods, you should probably pop the headlight and look inside the shell and verify wire colors. 
The 2 headlight relays, the Off-Run-Off relay, the Start button relay, and the horn relay all will go in there. 
The only relay that goes somewhere else is the ignition Switch relay which goes under the left side cover near the rest of the electrical stuff.

Hope this helps.

Charlie
PS:  If you need to talk this over, pm me and we can arrange that.
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Offline MCRider

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Re: CB750 kill switch wiring.
« Reply #32 on: January 18, 2016, 08:14:18 am »
Quote from: edwardmorris on January 17, 2016, 09:17:15 pm
This is why you need a DMS on a track bike

https://www.facebook.com/1392364424364539/videos/1670130959921216/

WOW! I'm surprised they don't require it. Those bikes run alcohol I think.
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Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline MCRider

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Re: CB750 kill switch wiring.
« Reply #33 on: January 18, 2016, 08:19:29 am »
Quote from: oldhatt45 on January 12, 2016, 06:05:30 am
MCRider,

The Black/White wire from the existing Off-Run-Off (Kill) switch is what you want to interrupt.
WHen I put in my Hondaman Relay Mods, this is one of the mods I did to put in the Off-Run-Off relay.
If you look at the diagram I've attached, look at the Off-RUn-Off relay.  You don't need any of the relay wires, you just need to look at the Black/White wire from the existing Kill (Off-RUn-Off) switch to the coils.

I hope this helps sort it out.  If not, just ask.

Charlie
Perfect. The BW wire in the shell has a male/female connector. I just pulled that apart, plugged in the deadman switch, after crimping on a male and female, and was in business. I knew it was simple, I was just stuck in my head. Thanks Charlie.
Ron
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Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline oldhatt45

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Re: CB750 kill switch wiring.
« Reply #34 on: January 18, 2016, 08:40:42 am »
Ron,

Glad you got "unstuck".  :)
Not like I've ever had that happen to me!   Hahahaha
And even better you got it done and it works the way it's supposed to!!!!!!
It truly does take a village.  :)  :)  :)

Charlie
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