Honda-SOHC

SOHC.co.uk Forums => CB750 => Topic started by: billy192 on October 13, 2013, 08:37:14 PM

Title: three yellow wires ???
Post by: billy192 on October 13, 2013, 08:37:14 PM

just stripped the generator cover and found the wires look as though the have been v hot or even melted.

(http://i1209.photobucket.com/albums/cc393/njwill1/new/Projects/CB750K6/IMG_6112_zps67ee2fd7.jpg) (http://s1209.photobucket.com/user/njwill1/media/new/Projects/CB750K6/IMG_6112_zps67ee2fd7.jpg.html)

(http://i1209.photobucket.com/albums/cc393/njwill1/new/Projects/CB750K6/IMG_6118_zps2023b169.jpg) (http://s1209.photobucket.com/user/njwill1/media/new/Projects/CB750K6/IMG_6118_zps2023b169.jpg.html)

my question ?
which yellow  (i have four from the plug) goes to which wire? as they just came apart in my hands.

(http://i1209.photobucket.com/albums/cc393/njwill1/new/Projects/CB750K6/IMG_6111_zps84bd8411.jpg) (http://s1209.photobucket.com/user/njwill1/media/new/Projects/CB750K6/IMG_6111_zps84bd8411.jpg.html)

(http://i1209.photobucket.com/albums/cc393/njwill1/new/Projects/CB750K6/IMG_6120_zpscd593060.jpg) (http://s1209.photobucket.com/user/njwill1/media/new/Projects/CB750K6/IMG_6120_zpscd593060.jpg.html)

(http://i1209.photobucket.com/albums/cc393/njwill1/new/Projects/CB750K6/IMG_6119_zps1fecc546.jpg) (http://s1209.photobucket.com/user/njwill1/media/new/Projects/CB750K6/IMG_6119_zps1fecc546.jpg.html)
5 wires ? 2 on the inside coil (one yello one Green) and 3 on the outside coil all yellow i think.

(http://i1209.photobucket.com/albums/cc393/njwill1/new/Projects/CB750K6/IMG_6123_zpsa604c84a.jpg) (http://s1209.photobucket.com/user/njwill1/media/new/Projects/CB750K6/IMG_6123_zpsa604c84a.jpg.html)

(http://i1209.photobucket.com/albums/cc393/njwill1/new/Projects/CB750K6/IMG_6124_zpsc84c3fba.jpg) (http://s1209.photobucket.com/user/njwill1/media/new/Projects/CB750K6/IMG_6124_zpsc84c3fba.jpg.html)

confused
billy

Title: Re: three yellow wires ???
Post by: neat street on October 13, 2013, 09:12:32 PM

Hi Billy
See link, hope this helps, copy and past in window to view.

http://www.google.co.uk/imgres?imgurl=http://www.oregonmotorcycleparts.com/Diagrams/CB750k2.jpg&imgrefurl=http://www.oregonmotorcycleparts.com/diagrams.html&h=857&w=1296&sz=155&tbnid=MSaDkvQ3mybcpM:&tbnh=118&tbnw=178&zoom=1&usg=__3DkQViaYYRBlznoWuLg4V-r1yUk=&docid=8heHZwMdDwh4ZM&sa=X&ei=3P1aUr6XGoGJ0AXprYHoDQ&ved=0CC8Q9QEwAA

Best regards

John

Title: Re: three yellow wires ???
Post by: cb750stu on October 13, 2013, 09:20:01 PM

Hi billy I asked the same question a wee while back you've got 3 yellow wires and one white it probably looks yellowish it doesn't matter which yellow goes to which the white wire is the female connector pictured,

Cheers

Stuart

Title: Re: three yellow wires ???
Post by: Bryanj on October 14, 2013, 06:19:25 AM

The inner coil has a green wire(earth) a white wire(from the regulator)
The outer coil has 3 x Yellow wires (to the rectifier--conect anyway round)

It is not uncommon to find the connector block like that, it happens when a small amount of corrosion causes a high resistance contact which makes heat.

thats why we used to pull apart and clean the contactcs if we took the cover off

Title: Re: three yellow wires ???
Post by: billy192 on October 14, 2013, 08:58:53 AM

thanks Stu/Bry
you little font of knowledge you  ;)
an see now in my own pic number one the top wire is indeed white, just with 55 year old eyes it looked yellow tar guys
is it Ok to solder the joints and cover with heat shrink?
Billy

Title: Re: three yellow wires ???
Post by: Bitsa (Ralph Wright - RIP) on October 14, 2013, 10:16:30 AM

Hi Billy.
If you think its alot of work and hassle maybe you could consider this ebay 160998715136.
Cheers
Bitsa

Title: Re: three yellow wires ???
Post by: cb750stu on October 14, 2013, 10:16:46 AM

Hi Billy my wire harness wasnt the best so i bought a new one from DS, you probably could repair your old one no problem maybe cut the wires back a bit to get good wire then crimp and solder new connectors on,

https://www.davidsilverspares.co.uk/CB750F1-(Single-overhead-cam)/part_194869/

Cheers

Title: Re: three yellow wires ???
Post by: Bryanj on October 14, 2013, 03:54:05 PM

Only problem with solder is if you want the engine out you have to leave the genny with the frame

Title: Re: three yellow wires ???
Post by: billy192 on October 14, 2013, 06:48:57 PM

bugger bought new 8 way connector now, never mind i will enjoy making a new bit.

Bry
thanks I did not think of that :(
will post pic of my handy work
Billy

Title: Re: three yellow wires ???
Post by: Bryanj on October 15, 2013, 07:19:18 AM

Look at:-

http://www.vehicle-wiring-products.eu/VWP-onlinestore/connectors/multiconnectors.php


They won't mate with the original Honda ones but if you are rep[lacing both parts that is no problem

Title: Re: three yellow wires ???
Post by: billy192 on October 15, 2013, 08:24:09 PM

Thanks Bry but already got tis one coming in the morning
along wirh 5 mtr of there Thin Wall 1.0mm² 32/0.20mm Automotive Cable yellow

http://kojaycat.co.uk/epages/950000457.sf/en_GB/?ObjectPath=/Shops/950000457/Categories/Connectors_Bullet/Motorcycle_8_Way_Connector

 :-X