new harness now bike wont run just back fires 76 cb750

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Re: new harness now bike wont run just back fires 76 cb750

globalfastener
i will try and post pics tomorrow
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Re: new harness now bike wont run just back fires 76 cb750

Piute
In reply to this post by globalfastener
 Ive been going off K6 from the start ,I mention that 1st thing ,I hate Electrical too,but has to be done and cost way to much to have some one else do it,You can't switch back and forth unless you know what engine ,harness ,frame,then you take all 3 diagrams(paper)and take out what is not needed,Hoping you have more wires then you need,have done that to cars
...........K1 trhu K5 (70 to75) are the same......
THERE IS NO BLK. N RED  WIRE on these years that I see
  still for headlight fuse block to headlight dimmer switchwith a connection,BUTTT the red n brn go totaly different then red. n blk.as I said (red n Blk.) it went straight to starter switch...
 
   by the way I'm Piute and Jodose Is my dog..hang in there trying to make this easy as possible for us both
  I'm learning to,this is the only way I can remember ,by doing over N over.
                            1977 CB750 F2 Super Sport
<LET THOSE WHO RIDE DECIDE><RIDE TO LIVE-LIVE FOR JESUS> 
Native American from central Cal,  Kickstand UP in S.W.Missouri,
                                       
 
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Re: new harness now bike wont run just back fires 76 cb750

TOOLS1
Administrator
I just spent a couple days rewiring my buddies bike. He wanted it to have all the stock switches, and idiot lights... I will never wire one back to original again. Honda went with overkill on the wiring.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: new harness now bike wont run just back fires 76 cb750

shinyribs
Administrator
Not trying to change the subject.But i would love to strip my wiring down to the bares bones.Anyone know where to get a good diagram to do this?
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Re: new harness now bike wont run just back fires 76 cb750

TOOLS1
Administrator
I'll try to get one up tomorrow.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: new harness now bike wont run just back fires 76 cb750

Piute
In reply to this post by TOOLS1
 I don't mind doing wiring if I have sombody helping me,my ole girlfriend was great at it,Paul(my cuzzin) help me,I checked all consctions and peeled back all the bull $h!^^,he ran the tach.I can't stand sloppy wires...Piute N Judose...I think it's called Oregon were I was looking befor I got the bookhttp://www.oregonmotorcycleparts.com/Diagrams/CB750k2.jpg
                            1977 CB750 F2 Super Sport
<LET THOSE WHO RIDE DECIDE><RIDE TO LIVE-LIVE FOR JESUS> 
Native American from central Cal,  Kickstand UP in S.W.Missouri,
                                       
 
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Re: new harness now bike wont run just back fires 76 cb750

shinyribs
Administrator
I do electrical work day in and day out.I hate sloppy wires ,too.Just not familiar with electrical on these bikes,guess im a long way from there though.
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Re: new harness now bike wont run just back fires 76 cb750

shinyribs
Administrator
Thanks for the diagram Piute
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Re: new harness now bike wont run just back fires 76 cb750

Piute
  ..Thanks for the diagram Piute ...
 Don't thank me yet because you need to be sure you get cb750F(1975-76)
  Ive got it my book and totaly different then the rest like mine is totaly diff...Piute...
                            1977 CB750 F2 Super Sport
<LET THOSE WHO RIDE DECIDE><RIDE TO LIVE-LIVE FOR JESUS> 
Native American from central Cal,  Kickstand UP in S.W.Missouri,
                                       
 
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Re: new harness now bike wont run just back fires 76 cb750

shinyribs
Administrator
Colors dont bother me.   im half color blind anyways,if i look at two things for long enough they turn the same color....sucks when you do control wiring for a living,At least i know how thing hook up regardless of color
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Re: new harness now bike wont run just back fires 76 cb750

globalfastener
most of the wiring is color coded so its easy.  for some reason, the headlight wont work when hooked up according to the diagram.  the harness and switches i have all should be from the k6.  how ever....i have all those split ground and hots that dont match up to the diagram, they look more like the k3-7 diagram found on this site.  

really i am down to the headlight and turn signals and brake lights(the brake lights may be the stop switches themselves, so i am not going to worry about that for now as the taillight is at least on)


by the way...do the signals stay on as running lights?
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Re: new harness now bike wont run just back fires 76 cb750

globalfastener
for some reason i am not getting any power to the light when i go by the diagram.

i ran the ground(green)  white wire to low beam, blue wire to high beam an nothing



i can run the white or blue to hot and it lights up(but obviously i have no hi/low)
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Re: new harness now bike wont run just back fires 76 cb750

TOOLS1
Administrator
Maybe this will help, you out. You, must not be getting power to the switch.
http://www.motorcycleproject.com/motorcycle/text/clrcode1.html
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: new harness now bike wont run just back fires 76 cb750

globalfastener
i i have tested the brown and white going into the switch and it has power going in.  i have even swapped out the switches....but for some reason it wont power the lights.

i know i am missing the turn signal buzzer and horn.  do both of these need to be plugged in to complete the circuit by any chance?
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Re: new harness now bike wont run just back fires 76 cb750

TOOLS1
Administrator
No they don't, but, you should have a black wire going to the switches.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: new harness now bike wont run just back fires 76 cb750

globalfastener
no black wire on the left switch

i have a black on the right....the right switch is working fine
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Re: new harness now bike wont run just back fires 76 cb750

Piute
In reply to this post by globalfastener
  Lunch time just wishing, O.K.were are you ?
.........it looks like the solid brown and the black/red wires are accounted for according to Piute n Judose
............................................................................................................................................


    Now when I said were these wires went that was from """" K  6 """"wire diagram if you take a look at it
 it goes derectly to the starter switch from the back of the connector at the fuse block
(at)in and out of the fuse box is red & brn ..
     
                                 So I believe this is were the problem is ,
  IF YOU were to look at thee other K model wiring diagram there totaly different.There is no blk & red wire


????????????  Did or has the starter switch been changed and if so to what yr.  ?????????????????
                            1977 CB750 F2 Super Sport
<LET THOSE WHO RIDE DECIDE><RIDE TO LIVE-LIVE FOR JESUS> 
Native American from central Cal,  Kickstand UP in S.W.Missouri,
                                       
 
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Re: new harness now bike wont run just back fires 76 cb750

globalfastener
Piute n Judose wrote
Lunch time just wishing, O.K.were are you ?
.........it looks like the solid brown and the black/red wires are accounted for according to Piute n Judose
............................................................................................................................................


    Now when I said were these wires went that was from """" K  6 """"wire diagram if you take a look at it
 it goes derectly to the starter switch from the back of the connector at the fuse block
(at)in and out of the fuse box is red & brn ..
     
                                 So I believe this is were the problem is ,
  IF YOU were to look at thee other K model wiring diagram there totaly different.There is no blk & red wire


????????????  Did or has the starter switch been changed and if so to what yr.  ?????????????????

the harness and both handle switches and ignition switch are all supposedly from a k6.  but the k6 diagram does not have all the splits that my harness actually has.  if you go by that the k3-7 diagram looks more like what i have..however, if you look at some of the colors....my harness looks more like the k6 diagram

i may have goofed.  i have a brn/blue wire open and that should be for the buzzer. i have a solid brown wire open as well and i dont know where that  goes.  

all the wires from the left switch are plugged in to their matching wire frm the harness.  i know there is power going into the switch, but i am not getting power coming out to the headlight or signals.

the right switch(on/off and start button work just fine)  

the ignition key works as it should.  
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Re: new harness now bike wont run just back fires 76 cb750

TOOLS1
Administrator
The brown wire should be, for the taillight. Maybe the Hi-Lo switch is bad? I have several controls laying around with bad switches. I wish I could find a company to make new switches, for the controls. They are not hard to replace. I could make a fortune rebuilding them.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: new harness now bike wont run just back fires 76 cb750

globalfastener
TOOLS1 wrote
The brown wire should be, for the taillight. Maybe the Hi-Lo switch is bad? I have several controls laying around with bad switches. I wish I could find a company to make new switches, for the controls. They are not hard to replace. I could make a fortune rebuilding them.
TOOLS
yeah   i thought about that.  two switches in a row though????  the yard i bought it from says that its known good.
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