i have a 88 cbr 600, and the brake light works for the foot brake, but not the hand brake? is there something i can check or do to fix this?

 

look under the brake lever. there should be 2 contacts. that is the front brake light switch. make sure the switch is connected to the wiring loom.

 

if that doesnt work check the integrity of the wires with a continuity tester. it is not uncommon for the wires to be corroded on these bikes.

 

If for some reason Michigan_313's fix does not correct your problem whichI think it will, here is a easy way to replace brake light switches on fluid type brake systems.

The unit is called a Banjo bolt brake switch.

Here is a link to the switch description.
http://www.dual-star.com/index2/Conv...t%20Switch.htm

A very easy and cheep fix, I used these switches on my Husaberg Supermoto to get the bike up to DOT specs and they work like a dream.

Simply remove the OEM banjo bolt and washersat the master cylinder and replace with the Banjo Bolt Switch and washers and then bleed the system. simple easy fix.

And if your worried about bleeding the fluid, here is a trick a friend and Master Honda Mechanic showed me years ago on how to bleed the front brakes on a motorcycle.

First, remove the fluid reservoir cap and rubber gasket.

Second, slowly turn the handle bars to the full LEFT lock position and try not to spill any fluid on your paint, if so clean up quickly!

Third, with the bars in the full left lock position slowly pump the front brake lever, this will pull the air out of the line and into the reservoir and then out of your brake lines.

With the bars in the Left lock position this puts the Master Cylinder at the highest position and allows the trapped air to escape easily by pumping the brake lever.

Top off your fluid level, repace the rubber gasket, cap, screws and
clean up any fluid and your ready to go!