a 75 cb750K right handle switch, starter, kill but w/o headlight control??

[waddellpc-3]

Hi Guys,
My 75 cb750K is missing starter button - Does anyone know with certainty what the difference is between a k4 to k5 to K6 Right handlebar switch assembly?  According to parts manual, my 75 RH assembly (#35150-374-671) has  'starter', 'kill' only but does not have a lighting control?- But K4 parts ( #35300-341-671) lists all 3-  starter,lighting, kill.  
2. Does K5, K6 and up not require a headlight/lighting switch? or was it moved to left side?  
Anybody have any insight on this? Anybody have a 75 pic of revised RH assembly? (can't see actual detail in parts manual) Seems to me you have to get proper assembly for wiring to match up....
2. NOTE: Tore off my leaky 78 cb750K carbs, cleaned them thoroughly and voila - no leaks and she fired up! (after 7 years) She's alive! makes me very happy knowing she runs so sweet.

Rob
75 cb750K (18K)
78 cb750K (34K)

[bobtacker]

I just had to repair my 73 750 and could not find the correct right hand switch. I used a switch off of a later model 750, a 75 I think, it did not have a switch for the headlight. The DOT thought you should have a light on all of the time so no more choice. I will check and see how I wired the new switch and let you know. The only problem I have is getting the brights to work, but I am still working on it.

[waddellpc-3]

thanks for the input.  what i figure is that 74 cb750 had right side separate headlight control (on, dim,bright) but it was changed on 75 since headlight was designed to stay on all the time - as you point out.  
(Generalizing) so when you hit starter button on a 75, it must interrupt the headlight while starter engaged until button is let go, which I assume - don't know for sure ) But was there no Bright/Dim switch on the 75?    

I have a RH switch from a 76 (which is still available) and I was going to try and install it on my 75.  
 - any info whatsoever on electrical or what to expect attempting this would be great.