Topic: need help with wiring _aftermarket switch (oem?)

[pelicanwheel]

Hi gang -

I could use some help with my aftermarket switches.  These are suppose to be direct replacement, but the wires are different.  On the right hand switch, there are only 6 wires on the factory swtich from 30 years ago, but my replacement has 8.  There are three controls on my right and switch' the "off-run-off" engine switch, the "start" button, and the "on-off" slider switch.

My replacement switch has 8 wires but the exactly same controls.  So why the two extra wires and what are they for?

*****************

On the left hand factory provided switch, there are 11 wires, while my aftermarket has 9.  I can't figure out what's missing.  I have the two aftermarket workshop manuals and they have all sorts of screwed up colors schemes, so I don't know what to trust.

I'm sure somebody must have used these aftermarket switches.  I even believe these were the switches you recieve if you order from honda today.  Can any body help?

Attached are the pics of the aftermarket switches.

Pelican

[pelicanwheel]

should have stated that this is for a cb750 K6.

Pelican

[crazypj]

Take pictures of wire end and tell us what colour extra wires are in there
PJ

[pelicanwheel]

here's what I have:

after market left hand controls:
1) orange
2) white
3) light green
4) light blue
5) gray
6) dark blue
7) light blue/white
black/yellow
9) orange/white

Factory left control:
1) light green
2) light blue
3) orange
4) white
5) gray
6) dark blue

after market right control:

1) black/white
2) black (same length as 1 above)
3) brown/blue
4) black/red
5) black (same length as 4 above)
6) yellow/red
7) yellow
white

factory right control:

1) black/white
2) black (same length as 1 above)
3) black
4) yellow/red
5) green/red
6) brown/white

[Jonesy]

Left pod: The orange/white and light blue/white are your running light supply wires. Apparently your bike was not equipped with them (provided the original control pod was correct for your bike). The black/yellow I'm not sure where that goes.

Aftermarket                                                         Stock
orange              (left turn signal)                              orange
white                (low beam power)                          white
light green         (horn)                                           light green
light blue            (right turn signal)                          light blue
gray                  (pulse signal from turn signal relay) gray
dark blue           (high beam power)                         dark blue
light blue/white  (right side marker)
black/yellow       ()
orange/white     (left side marker)

Right pod: It appears the aftermarket control has the starter solenoid wire (yellow/red) for the bikes not equipped with the starter safety unit (green/red). It also does not have provision for the turn signal beeper (brown/blue).

Aftermarket                                           Stock
black/white         (coil power)                      black/white
black                  (switched battery power)   black
black                  (switched battery power)   black
yellow/red          (starter button)                 yellow/red
yellow                ()
white                 ()
brown/blue        (signal beeper pickup)
black/red            ()
                        (safety unit)                      green/red
                        (lighting)                           brown/white

You may have to open the pods and see what these wires are attached to in order to know if maybe some of the wire colors were changed... I think I have one of those aftermarket pods, I can look at it tomorrow.

[Jonesy]

After looking at the aftermarket switch pod I have, the black/yellow wire from the left runs to the Hi/Lo selector switch. I still cannot determine what it is for....

[pelicanwheel]

Thanks much!  But you confused me on the right aftermarket.  You say "it" doesn'thave brown/blue.  My aftermarket does, so what did you mean by that sentence.  Also, do I just ignore the extra wires?

Pelican

[Jonesy]

Sorry, should have clarified that the OEM one didn't have brown/blue. I started by just stating the differences but I then thought it would be better if I did a direct comparison.

Try it without the extra wires. If everything works, cool. If not, report your finding and we'll get this figured out...

[pelicanwheel]

thanks much

[pelicanwheel]

okay...here's where I'm confused now.  Their is a brown/red wire in the headlight bucket coming off the main harness.  I know that the other end goes to the fuse pig tail.  My fuse box pig tail has six wires;  red feed and draw, brown feed and draw and brown/red feed and draw.  I can't seem to find what the brown/red is for.  It has a 5amp fuse marked on the fuse box.  This is all stock cb750 k6 (1976).

On my after market right hand control switch, the black/white wire is a male connector and the black/white from the main harness is male.  Is this just an oversite on the aftermarket maker part?

On my after market right hand again, I have a black/red wire with a female connector and on the main harness from honda, I have a black/red with a female.  Again, is this oversite?  Also, what is the purpose of the black/red wire anyway.  I can't find it in any of my manuals.

Jeez, you would think a direct factory replacement switch would be easier to install.

Thanks everyone.

Pelican

[Jonesy]

okay...here's where I'm confused now. Their is a brown/red wire in the headlight bucket coming off the main harness. I know that the other end goes to the fuse pig tail. My fuse box pig tail has six wires; red feed and draw, brown feed and draw and brown/red feed and draw. I can't seem to find what the brown/red is for. It has a 5amp fuse marked on the fuse box. This is all stock cb750 k6 (1976).

The brown/red wire is the power for the headlight running from the On/Off switch to the Hi/Lo selector. This makes the provision for the Headlight fuse in the fusebox. (Look at the schematic and double check my memory on this one...)

On my after market right hand control switch, the black/white wire is a male connector and the black/white from the main harness is male. Is this just an oversite on the aftermarket maker part?

Usually the "hot" side of the connection (in this case the kill switch is governing the battery voltage) has the female connector, in case it comes apart it won't make for an exposed terminal that could short out. It sounds like the aftermarket guys messed up. To be sure, what did the OEM connector have?

On my after market right hand again, I have a black/red wire with a female connector and on the main harness from honda, I have a black/red with a female. Again, is this oversite? Also, what is the purpose of the black/red wire anyway. I can't find it in any of my manuals.

I couldn't find it either. It sounds like it was another oversight. But, your OEM pod didn't have this wire, did it? Provided the OEM pods on the bike were the correct ones, if everything worked OK, is it required?

[pelicanwheel]

Thanks Jonesy -

I just hope the next poor guy that comes along trying to figure this out will do a search on this post.  That is why I'm being verbose (sp).

"The brown/red wire is the power for the headlight running from the On/Off switch to the Hi/Lo selector. This makes the provision for the Headlight fuse in the fusebox. (Look at the schematic and double check my memory on this one...)"

You lost me here.  My on/off switch is on the right pod, and my hi/lo is on the left.  Are you saying that the brown/red from the honda main harness goes to the right pod (on/off) then out of the right pod to the left pod (hi/lo), doing the connections in the headlight bucket?

As for the black/red that we can't seem to find what it's for....someone has to know...its on the main honda harness.  I'm sure somebody went to the trouble for some reason to put it there.  Could it be something for a later bike (my bike is that bastard, left handed, red headed, 1976 k6 model that seems to have many things different than the k0-k5 bikes.  For example, the triple tree upper clamp bolts are 7MM instead of 8mm like the rest of the years!)?

Thanks, Pelican

[Jonesy]

I'll poke through the K6 diagram I have again when I get home.. The black/red wire is really starting to bug me...

Can you post pics of your original controls? This is getting strange. If (this is a big IF as I'm going off of memory right now, not the wiring diagram!) I remember right, power goes into the lighting On/Off switch and came out in two wires: Brown/white for the gauges and tail light and brown/red to go back to the fuse box and back up to the Hi/Lo switch. In my switch I saw a black/yellow wire go to the Hi/Lo selector... there is a possibility that this should have been the brown/red feed for the headlight. Use a continuity tester to see if the black/yellow wire alternates contact between the dark blue and white wires when the Hi/Lo switch is moved. if it does we may have solved this little mystery... The earlier 750's with just the single main fuse did not have this feature.

If you are wondering about the harness, the portion that runs along under the gas tank near the coils should have a white tag with the date of manufacture (can't remember if the model code is on it or not). I think the wiring harnesses were made by Sumitomo Electric.  (says on this tag)

[TwoTired]

I glanced at the odd color wires you have for your new controls.  Definately don't match the Honda shop manual schematic...for US models.  In fact, none of the wire diagrams in the 750 Shop manual cover bikes outside of the US.  I looked at some CB550 Shop manual wire diagrams for other countries.  Sure enough, Black/Yellow shows up on the left control as power for the HL.  It is comes from the fuse which would be Br/R on an American wire harness.
I'm thinking you may have stock replacements switches intended for another country application, or perhaps police model application or a combination of the two.

I'm thinking this will get your left control to function on your 76 CB750
Aftermarket                                                      Stock headlight bucket connection
orange              (left turn signal)                              orange
white                (low beam power)                          white
light green         (horn)                                           light green
light blue            (right turn signal)                          light blue
gray                  (pulse signal from turn signal relay) gray
dark blue           (high beam power)                         dark blue
light blue/white  (right side marker)                         N/C
black/yellow       (Headlight power)                         BR/R
orange/white     (left side marker)                         N/C
No provision       (Turn signal Buzzer)                         N/C

The right control still has mysteries but continuing with the non-us model theme:

Aftermarket                                                Stock
black/white         (coil power)                      black/white
black                  (switched battery power)   black
black                  (switched battery power)   black
yellow/red          (starter button)                 yellow/red
yellow                ()
white                 ()
brown/blue        (Drives tail light fuse)                N/C  This power is supplied with the ign switch on US models
black/red           (Power drive for headlight fuse)  Bk/R

Note that the wire diagram used for the above assignments has a headlight switch with a park position which your control doesn't have.
Does your OFF-ON switch have a mid position, or a push in position?

Best I can do with current information.

Cheers,