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81 GS400 - brake light doesnt engage

  • Thread starter Thread starter somaticshorty
  • Start date Start date
S

somaticshorty

Guest
My tail light is constant but stays constant even when front brake is engaged - no brake light.
curious, are there separate bulbs for brake light and tail light?
Maybe the Fuse?
Also, looking for a manual for my bike, any suggestions.
Thanks!
A
 
Usually it's a switch problem or corrosion in some connector. Got a multimeter?
 
Is it constantly on "bright" or just on and doesn't go "bright" when you hit the brake levers? There's a single bulb with two separate filaments, on for "on" and one for "brake". Try the front and back brake separately, see if that does anything. You might just need the switches cleaned.
 
If the rear break switch is adjusted improperly it can keep the break light on and you wouldn't see any change, or the break light filament could be burnt out. The first would have a very bright light, the second, a normal running light, neither would react to the brake levers front or back.
 
Last edited:
Thanks for your responses - double checked and it is only the front brake that does not engage the brake light, the rear break changes from constant to brighter. So best to attempt cleaning switches first?
 
somaticshorty said:
Thanks for your responses - double checked and it is only the front brake that does not engage the brake light, the rear break changes from constant to brighter. So best to attempt cleaning switches first?
Click to expand...

Deoxit spray
 
clean the switches as suggested or change the whole break switch assembly with a new unit.

Also check to make sure the front break hasn't been install backwards (or connectors are reversed)...Did this the first time i put that little unit back together!
 
Yea you can go the fluid pressure one or find an after market switch kit. they are also pretty cheap
 
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