Help. Brake light doesnt come on when using front break. Where do i start looking for fault . Is there a seperate bulb for it. Could it be that simple.?                                                                                                                                                                             

Hi ... underneath the brake lever you will find a very small switch, it maybe that one of the contacts has come off, may need to be simply pushed back on.
Or ...
The switch may have dirty internal contacts, most switches are held in place with a screw (ahem) .. remove the switch, spray with WD40, especially the small plunger part, refit and try again.
Or ...
Replace the switch, put this number in ebay search bar
eBay item number:140995212907
                                                                                                                                                                             

Hi gremlin. Thanks very much for input. I will let you no how i get on. X                                                                                                                                                                             

  As Gremlin says, the likely cause is a stuck plunger in the micro switch   All the Honda front brake light switches I've come across however are just a "push fit" in the lever bracket   A quick inspection of the lever assembly will confirm if this is the case   Whilst holding the brake lever in the "on" position you should be able to see the tiny plunger   Take a small screwdriver (or other suitable implement) and try to push the plunger in   If it moves then the problem is not there but either inside the switch or the wires connected to it   If the plunger doesn't move in & out freely then a little "liquid engineering" such as WD40 should be sufficient to free it up   Be gentle with it, it's only made of plastic, but they are generally quite robust & reliable   Best of luck with it, let us know how you get on                                                                                                                                                                                 

Front brake light switch on the cbf should be the type that is held in with a set screw and not the push in type.

Very comman failure if washed a lot or ridden in the winter. For the extra tenna get the gen honda one there much better normaly and you will get a years warranty with it. (i used to go through two or three a year when i was a courier but only ever bought one as it was under warranty) Unlike some of the cheapo pattern ones.

Also dont forget to squirt some oil in it before fitting helps keep the corrosion at bay.

  OK Stuie, I stand corrected   We all live n learn   But lube & regular inspection is always recommended   OEM electrical parts are generally better value in the long run   Particularly with Honda                                                                                                                                                                               

Oohh yes MZ i learnt the hard way about non genuine parts especialy for honda and bmw....funnly enough yamaha seam to build there bike with parts that make the pattern stuff look good ;-)                                                                                                                                                                             

Thanks for your input guys. Not sorted yet. But am usless at this sort of thing. So when it stops raining im hoping to get hold of a man who can. Lol.                                                                                                                                                                              

Hi,

If you use WD40 (which is great for water repellant) it will corrode the electrical contacts with time.

you are best cleaning contact, drying them, then using silicon grease which is non electrical conducting and corroding of the electrical contacts. it is also a water repellent so no more corrosion of contacts.

                                                                                                                                                                             

Thanks for that tip. Diver. X                                                                                                                                                                             

Fantasia, use ACF50, you could say it is a non-conductive version of WD40; it was developed to lubricate and protect things including eletrical components like switches in hostile environments.

                                                                                                                                                                             

Thankyou to you all for your advice and tips. I will get some acf50 scorpio. For future. I took my bike to a friends mechanic. It was my the switch. All sorted now. Xx
                                                                                                                                                                             

Alternatively you could get rid of the troublesome microswitch altogether by replacing it with a Goodridge Banjo Bolt Brake Light Switch. Did this on mine after it kept playing up, you will need to bleed the brakes though:

http://www.demon-tweeks.co.uk/motorcycle/brake-accessories/goodridge-banjo-bolt-brake-light-switch