OK, answering my own question, might be helpful to someone.

Over here, we have ( or had ) a cheap commuter bike, the Honda CG125. I took a chance and bought a mudguard (fender) from David Silvers, and found that it was a pretty good fit. Front mounting holes lined right up, just had to make some new holes for the rear mounts.

I'm in the process of rebuilding a CL175 to look something like the CB175 I owned in another life. Mudguard in the fore ground is the CL175 part, much of the chrome worn right through to the plating underneath.

And the best bit ? Guard cost 15 UK pounds from DS.

 

Hi Richard
thanks for sharing
is that the Brazilian made Cg125
How the headlight hunt going

 

Hi Simo,

I guess from the year (84) it is for the Brazilian bike.

Here's a link to the part on DS US website:

David Silver Spares USA - Honda CG125E 1984 Front fender / Front mudguard

Haven't bought a headlight yet, but wondering if a UK spec CG125 light would work. I'd have to figure out a way of wiring in the sidelight, not present on the US spec CL175.

 

Someone else here will probably point out if this is incorrect
the black wire is switched positive
splice Into it in the bucket where it's connected to handlebar light switch and then use the green ground wire from the main bulb
Then the sidelight should be live as long as the keys on and the battery has a charge

 

Richard, MOST era US and "General Export" spec bikes have an unused BROWN wire (part of the main harness) inside the headlight shell which is only "hot" when the lights are on or the key is in the "park" position.....
That wire is the one that "feeds" the front, in-headlight running lamp on the "Euro-spec" models.......
You could instead connect it to the Brown-White stripe wires as well....
The Black wire Simo suggested can also be used, but it and the Brown/White wires will not light it in "Park"....(Will depend on the MOT requirements)....
Obviously, any Dark-Green wire or any other suitable grounding point can be used as the ground......

 

Thanks Chaps.

I spent a while this afternoon checking out the wiring diagram, and saw how the rear light is wired to come on with the ignition switch in the 'park' position.

Also solved an issue with the ignition switch. When I first got the bike, I connected up a battery, and tried the lights and indicators, but nothing worked, so I put this on the list of things to be sorted out in due course. Anyway, previous owner had relocated ignition switch to a bracket mounted on the bar clamps. This had stretched the wiring, causing the brown wire to come adrift from its solder pad on the back of the switch, simple to fix.

Regarding that pilot light. Over here, newer vehicles have daytime running lights, so I think I'll stick a bright LED lamp in there, and wire it to an ignition controlled power source, as Simo suggests. DRLs are supposed to extinguish when dip or main beam beam is on, but as the light is in the same reflector I doubt this will be an issue with my usual MOT guy.

 

CG125 headlight arrived the other day, fits neatly between the fork ears. Plastic bucket is a bit deeper than OEM, so should make shoe horning the loom into place easier.

I've got a blue LED and holder to fit as the main beam warning light.

Also had a senior moment. Wondered why the new bulbs blew when I connected up the battery. Forgot that CG125 is 6 volts ...

New 12v 25/35w bulbs located and ordered.

 

Hi Richard
would you mind posting some pictures and measurements
thanks

 

Sure thing Simon, haven't been near the bike or computer today, wall papering the bedroom instead.:sad:

I will get back to you on this, meanwhile here's a link to the place I bought the light from.

REPLICA HONDA CB100 CB125 CG125 HEADLIGHT HEADLAMP COMPLETE | eBay

 

My bike is outside in the lock up, and it's cold and dark out there, so no photo of the headlight shell tonight.

However, here's a pic of the headlight alongside the original CL175 light.

And here's a back view. Takes a standard Chinese 12v 25/35w three lug bulb.

http://www.wemoto.com/parts/picture/hl-777027_10/

 

I got some more of my electrics sorted out. Plugged in a spare battery from my 599. Indicators, horn, lights and brake lights all work now. Original flasher relay was a bit tired, so I replaced it with an automotive Lucas relay that I had lying around, flashers work nicely now.

Here's a photo of the CG125 headlight fitted.