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Author Topic: Harness Ground Question  (Read 2138 times)

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Offline Goldbug

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Harness Ground Question
« on: August 22, 2012, 12:50:13 PM »
1973 CB500.

Can anyone describe for me how the harness "green wire" grounds to the frame, as in where it makes the physical connection to ground?

I moved all my electronics and I noticed there is one green wire off the main harness that is not connected to anything. It's a female blade type connector with a cover. It is NOT the wire for regulator, that one is accounted for.

It's possible that when I took all the electrical apart over a year ago that I lost whatever this connects to and it occurred to me that I know of no other place where the green wire hits the frame. It would be easy for me to connect this to the frame, if that is indeed what I am supposed to do with it.

I suppose I could look at my '78 550, although I'm afraid it might be different, plus the PO made some "custom improvements" to that harness.  ::)
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Offline Johnie

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Re: Harness Ground Question
« Reply #1 on: August 22, 2012, 01:37:17 PM »
I do not own a CB500, but all the early 750's have an extra ground wire in the area you described. I think that is what you have there.
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Offline LesterPiglet

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Re: Harness Ground Question
« Reply #2 on: August 22, 2012, 01:40:19 PM »
550 has the extra green behind the flasher relay also.
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Offline Goldbug

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Re: Harness Ground Question
« Reply #3 on: August 22, 2012, 01:46:26 PM »
Oh yeah, I just saw that on my 550. Didn't know it was a feature. 

So how does the harness connect to the frame? What am I missing here?
« Last Edit: August 22, 2012, 01:52:07 PM by Goldbug »
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Offline LesterPiglet

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Re: Harness Ground Question
« Reply #4 on: August 22, 2012, 01:48:40 PM »
I honestly cannot remember connecting a green wire to the frame when I put my harness on. Is it at the coils possibly?
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'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


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Offline Goldbug

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Re: Harness Ground Question
« Reply #5 on: August 22, 2012, 01:52:55 PM »
Yeah, somewhere else on the harness (I only took the main harness out) or through another component like the alternator or coils or something. I had that thought. I guess we will find out when I turn the key for the first time tomorrow.
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Offline luap

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Re: Harness Ground Question
« Reply #6 on: August 22, 2012, 02:02:00 PM »
I have not used a stock harness, But kinda remembering taking the harness off there is a pigtail ground in the headlight bucket that one coming back an bolts  to the 10mm that holds the coils in place
after rereading could it be the regulator green is the blade a 90 degree
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Offline Goldbug

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Re: Harness Ground Question
« Reply #7 on: August 22, 2012, 02:10:04 PM »
No, it's not the regulator green, that is accounted for.
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Offline scottly

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Re: Harness Ground Question
« Reply #8 on: August 22, 2012, 02:37:39 PM »
Quote from: Goldbug on August 22, 2012, 01:52:55 PM
Yeah, somewhere else on the harness (I only took the main harness out) or through another component like the alternator or coils or something. I had that thought. I guess we will find out when I turn the key for the first time tomorrow.
The harness is grounded at the coil mount.
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Offline Goldbug

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Re: Harness Ground Question
« Reply #9 on: August 22, 2012, 03:34:56 PM »
Ah, I never touched anything up there. Thanks.

If all goes well she should be up and running tomorrow.
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Offline bryanj

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Re: Harness Ground Question
« Reply #10 on: August 22, 2012, 03:40:18 PM »
Extra green is for diferent market 3 contact flasher cans, main ground is big wire battery to rear engine mount---MAKE SURE THERE IS NO PAINT EITHER SIDE OF MOUNT WHERE IT CONNECTS TO CABLE AND MOTOR CASTING.

Small grounds are inside headlamp shell and by coils
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Offline lucky

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Re: Harness Ground Question
« Reply #11 on: August 22, 2012, 03:41:15 PM »
Quote from: LesterPiglet on August 22, 2012, 01:48:40 PM
I honestly cannot remember connecting a green wire to the frame when I put my harness on. Is it at the coils possibly?

On a CB750 the ground for the harness is on the rear bolt for the battery box mount.
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Offline LesterPiglet

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Re: Harness Ground Question
« Reply #12 on: August 22, 2012, 03:49:57 PM »
Although this is a 500 Lucky.   ;)
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'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional

bollingball

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Re: Harness Ground Question
« Reply #13 on: August 22, 2012, 04:27:00 PM »
Quote from: lucky on August 22, 2012, 03:41:15 PM
Quote from: LesterPiglet on August 22, 2012, 01:48:40 PM
I honestly cannot remember connecting a green wire to the frame when I put my harness on. Is it at the coils possibly?

On a CB750 the ground for the harness is on the rear bolt for the battery box mount.

Lucky Did you read the OP it is NOT a 750. Stay Focused
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Offline scottly

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Re: Harness Ground Question
« Reply #14 on: August 22, 2012, 05:08:59 PM »
The 750s had the harness grounded at the coil mount.
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Offline Don R

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Re: Harness Ground Question
« Reply #15 on: August 22, 2012, 05:19:03 PM »
My 750 K0 had a ground wire attached under the seat where the latch bolts on. The 750 F1 has it near the coils.
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