Author Topic: Accurate cb550k3 wiring diagram  (Read 3633 times)

Offline nairb

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Accurate cb550k3 wiring diagram
« on: May 29, 2021, 04:48:45 PM »
Is there such a thing as an Accurate cb550k3 wiring diagram for a 1976 550K3.  I have what I believe is a 1976 550K3 from new.  BUT I needed to look at several wiring diagrams to fine one that almost fits the bike.

The Haynes manual fits the best (shock)and thats for the cb550F.  The strange thing is.....when I ordered some new throttle cables for a cb550K3 a while ago from dss they did not fit...... In the end a CB550F throttle cable did.  I have long wondered if the bike I bought new from a shop in Peterborough was actually an F1/F2 disguised as an K3.  It was the last year before the cx500 arrived in the showrooms and I suspect the bike shop was keen to be rid of the old 550's.
cb550k3, cl450k5, re5m, xs650xs2, mt500, kettle, gt550 x2, gt380 Kz750 twin, cb360K0 and an old working bicycle

Offline deltarider

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Re: Accurate cb550k3 wiring diagram
« Reply #1 on: May 29, 2021, 06:02:59 PM »
I have not heard of a 1976 K3. K3 was from 1977 on. Anyway, here a link to the Shop Manual CB500-550 which contains addenda for the CB550K2 '76 as well as the K3. Wiring diagram K2 is in p.172, K3 (three different diagrams) are in p.182-4. https://www.dropbox.com/s/88zdzlj8olqi8pl/Honda%20CB500_CB550%20%20Four%20Service%20Manual.pdf?dl=0
« Last Edit: May 29, 2021, 06:04:57 PM by deltarider »

Offline mickwinf

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Re: Accurate cb550k3 wiring diagram
« Reply #2 on: May 29, 2021, 06:34:48 PM »
I have a digital copy of the k3 suppliment which has 3 wiring diagrams, if you want i can email it to you. The f models have a junction box under the tank where as the k3 many wires join in the headlamp, so quite different.
Love the 500 and 550 have a 500 called Lazarus under restoration

Offline nairb

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Re: Accurate cb550k3 wiring diagram
« Reply #3 on: May 30, 2021, 12:02:57 AM »
I have not heard of a 1976 K3. K3 was from 1977 on.

Mmmm, I thought it was a 76 model.  Or I thought I purchased it in 76.  So I managed to dig out its invoice from that time. See below.

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And it plainly says 20-01-78.  So there we go.  And it does say New CB550K3.  Funny how the new clutch cable is to long and the K3 throttle cables dont fit.  Maybe I dident get the right ones.  The frame/engine numbers are correct for a k3.

The European type wiring diagram seems to be the one. 

Thanks
Nairb

cb550k3, cl450k5, re5m, xs650xs2, mt500, kettle, gt550 x2, gt380 Kz750 twin, cb360K0 and an old working bicycle

Offline nairb

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Re: Accurate cb550k3 wiring diagram
« Reply #4 on: May 30, 2021, 01:05:57 AM »
Does the swinging arm have closed ends or removable blocks?

Just checked... they are  removable blocks.

It had 4-into-4 exhausts and looked like a K3 when it arrived.

It was "Ken Ives(1975 Ltd)" of Leicester, anybody remember them?? from years ago, who thought it was a re-badged F1/F2.  Anyway its been to Italy twice and Paris 3 times in its younger days.  So whatever it is, its done good and never broken down - except for a puncture or 2.
And now its finally back on the road.

Thanks
Nairb
cb550k3, cl450k5, re5m, xs650xs2, mt500, kettle, gt550 x2, gt380 Kz750 twin, cb360K0 and an old working bicycle