Hi all

The hazard light switch has stopped working on my 87 K100LT. When I first got the bike the rocker switch would activate the hazard lights now and again. Any tips on getting into and checking the rocker switch.

Banditrob wrote:Hi all

The hazard light switch has stopped working on my 87 K100LT. When I first got the bike the rocker switch would activate the hazard lights now and again. Any tips on getting into and checking the rocker switch.

Dirty probably, remove from dash and clean. It happened to me few times

The Hazard switch is a SPDT switch. Separate the switch connector under the tank on the left side (3 pole flat black connector). There will be three wires -- Brown, Yellow/Violet and Blue. Engage the switch and test for continuity between Brown and Yellow/Violet. You should read near zero Ohms. Disengage the switch and take the measurement again. You should get an open circuit. This is the normal operation of the switch. If you have open circuit between Brown and Yellow/Violet when engaged, then the switch needs to be examined.

The rocker pivots on a plastic protrusion off the main body. If you are really careful, you could remove the rocker by gently prying the rocker from its pivots. Springs will go flying when you do this so be careful. However, it is probably best to first test continuity at the switch terminals to see whether it is the wire or the switch. If it is the wires, it probably is a broken solder connection at the switch. If it is the switch, then first try spraying through the switch housing with contact cleaner. If that fails to revive the switch, then disassemble and diagnose why the switch contacts are not working. By this time, it might be necessary to buy a new switch.

Hope this helps.

Some pictures is usually helpful, have a look at this link.

The switch is similar to the heated grips switch that I have on my bench at the moment, so I've just pulled it apart for a pic:-

Push on the two clips with a screwdriver to release the contact block.



You'll then be able to clean the contacts properly.



Paul.

Great pics, thanks for the help everyone.