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Offline 750IV

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wire to nowhere
« on: November 10, 2020, 04:57:37 PM »
Does anyone know what this red wire with a 90 degree connector goes to or does?
It comes off of the pos. battery cable. 74 750K.
The wiring diagram in Clymers shows it but it doesn't show it being connected to anything. It's short and only reaches to the seat latch,
Thanks
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Offline kerryb

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Re: wire to nowhere
« Reply #1 on: November 10, 2020, 06:11:06 PM »
While I haven't worked on a k4, I've never seen one of that plug/wire color used by honda.  More importantly that wire would need an inline fuse to protect the component it powers.  Does the electral tape cover a splice?
I have run in to several unused connections on a k8 harness that are also shown in the wire diagrams.  These are usually for a circuit not required or used in the us, but used in another country for a specific purpose.
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Offline 750IV

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Re: wire to nowhere
« Reply #2 on: November 10, 2020, 08:45:54 PM »
It's not a splice. There was a bit of bare wire showing at the crimped connector. This is a pic of the wire in the wiring diagram from Clymer K3 to K7. Center of the pic.
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Offline scottly

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Re: wire to nowhere
« Reply #3 on: November 10, 2020, 09:00:48 PM »
It doesn't look stock to me, either. Where does the wire go? Does it go into the main harness? The only solid red wire in the stock harness goes from the main fuse to the ignition switch.
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Offline newday777

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Re: wire to nowhere
« Reply #4 on: November 11, 2020, 12:25:20 AM »
Yes that red, as well as a green are spares.

This is a K4 I've been working on for a friend.
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline 74CB750K4

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Re: wire to nowhere
« Reply #5 on: November 11, 2020, 07:09:10 AM »
Yep, extras. I have them too on my K4. Got the bike from my dad so nobody before messed with it.

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Offline 750IV

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Re: wire to nowhere
« Reply #6 on: November 11, 2020, 07:16:31 AM »
Someone else having the red wire that isn't used makes me feel better. I don't see an unused green wire. The only green wire near there is a ground to the bottom bolt on the seat latch. I think it's a ground for the rectifier and the starter safety switch.
scotty, the wire comes from the pos battery cable at the end that connects to the starter solenoid.
74CB750K4, thanks for the confirmation.
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Offline BenelliSEI

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Re: wire to nowhere
« Reply #7 on: November 11, 2020, 10:32:33 AM »
A few of mine have it too. Good spot to tie in the + for a two pin bat. charger lead.....
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Offline 750IV

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Re: wire to nowhere
« Reply #8 on: November 11, 2020, 02:37:03 PM »
Yeah I initially thought it was added by a previous owner for just that purpose.
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Offline Bodi

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Re: wire to nowhere
« Reply #9 on: November 12, 2020, 04:01:35 AM »
The Clymer schematic shows a connection, not a wire, the way I interpret it. But Clymer diagrams are not definitive: what is on the Honda schematic?
Leaving an open unfused battery power wire end with a connector, although insulated, hanging free... I can't imagine Honda doing that.
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Offline 750IV

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Re: wire to nowhere
« Reply #10 on: November 28, 2020, 06:13:10 AM »
I happened to run across this pic from a vendors web site. The red wire with the 90 degree connector is the one I'm talking about.
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