MOTOBRICK.COM

TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: K75RT Keith on February 18, 2013, 08:22:29 PM

Title: 90 K75RT Key out Switch to OFF lights all on
Post by: K75RT Keith on February 18, 2013, 08:22:29 PM

Today when I started my K75RT all seemed to be going well...until I tried to turn it off and remove the key.  When I did the dash, headlight, running light, marker lights and tail light all stayed lit. 
DOESN'T MATTER IF THE SWICH IS SET TO "ON", "ACC." OR "OFF" KY IN OR OUT, the lights stay on.

Any suggestions where to start looking would be appreciated. 

Title: Re: 90 K75RT Key out Switch to OFF lights all on
Post by: 2000rsv on February 18, 2013, 08:33:01 PM

Sounds like an ignition switch problem.  I am certainly not a K expert, but that is where I would start looking.

Title: Re: 90 K75RT Key out Switch to OFF lights all on
Post by: Qdude on February 21, 2013, 02:42:58 AM

Agreed.

I would remove the ignition and check the slider housing.
I know, drilling out those bolt heads...

The wafer key set will be on top,
below that will be the steering lock mechanism,
below that will be the contact slider housing (created term, I don't know official name) It kinda looks like a little white auto tranny torque converter shaped thing.
below that will be the five wire solder points.

I figured out the wiring for the k1100lt. I can't imagine too many major differences. Hopefully they will be similar enough...

There is a red (power), purple, green and a couple of gray wires.
In that housing will be 4 small springs and three contact sliders; one "Y" shaped, one "U" shaped and one shaped like a bent handled magnifying glass. If one of those springs broke or one of those parts failed then potentially there could be something shorting out the power lead in there.

That red wire seems to be supplying power to the others when the ignition should be off. If the ignition is to blame, then there will be continuity from the red wire to the other wires (especially the green and the striped gray wires) while the ignition is in the off position. Normally there will be no continuity from the red wire to any other wire except the purple one which supplies +12 to the dash light which works with the ignition off. You could check continuity at the plug connection (under the tank) without tearing too much apart. If the ignition checks out, then it sounds like you have a compromised power wire (burned, worn insulation) shorting to another somewhere else, but my bet is with 200rsv in that it is at the ignition,

Title: Re: 90 K75RT Key out Switch to OFF lights all on
Post by: GASS95 on February 25, 2013, 06:16:16 AM

 :hmm:Hi guys,a couple yrs ago I had a similar occurrence,I rode to my destination shut off bike(95K1100LT)and the headlights stayed on and the guage lights also I think but it was light out so couldn't tell what was on but my load Shead relay fried and I lost all lights but not the engine electrics so I rode home?
Don't know what caused it but may check relays?
 Keith

Title: Re: 90 K75RT Key out Switch to OFF lights all on
Post by: K75RT Keith on June 23, 2013, 03:41:43 PM

Problem resolved after cleaning starter and grounds plus replaced the relay