Topic: change the ignition switch on CB750A

[shar001]

The original ignition switch does not have a key, so I have a replacement switch for it, but the new switch has only 4 wires and I don't know how to do the change. I have added the picture of new switch. if anybody knows how to fix it please let me know.

[shar001]

the is the wire harness adapter to the ignition switch. if anybody knows how to covert it to 4-wire setup ( what i have is universal  4 wire switch)

[raymond10078]

The four-wire switches do not have the same functions as does a five-wire switch.  You'd lose the park position, the ability to lock the steering, and some of the older switches have a completely different (electrically) Position 2.

Can it be made to work?  Yes.

But why?  Is there a reason you didn't just buy the right switch (other than it costs about twice as much ($32 at cb750supply))?

The following switches are common to the 1977 750A:

1977 CB550F
1977, 1978 CB550K
1977, 1978 CB750A
1977, 1978 CB750F
1977, 1978, 1979 CB750K
1979 CB650

The one you have won't fit or mount up the same as the original, either.

[dave the welder]

go to your local Honda dealer and order the correct replacement.i did and it cost me 27 bucks had it in 3 days

[shar001]

thank you very much for the reply. i already order new one for it.