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"KRS/GT" Technical Q&A K1200RS/GT Technical Questions/Answers

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  #1  
Old 05-15-2018, 10:30 AM
kjsimon kjsimon is offline
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Weird electrical issue

So I have a 98 K1200RS, new to me as are bikes in general. I installed a hella outlet on the frame just above the forks as it had a series of holes that fit the outlet perfectly. I did this while I had the tank removed as I was in heated grip repair hell (another long story but I fixed em) so I connected the new outlet to the fuse box so it is on only when the ignition is on. Worked perfectly. Store the bike for winter and then took it out at the beginning of April. Plugged my hella to USB outlet in, alls good. One day I removed the outlet and when I went to put it back in, screwed it up (contacts got pushed in on the adapter) so I had to replace it. Plugged the new on in, all's well.

The following day I go out and start up the bike and it immediately revs to 5000 RPMs, cant get it to go down. Shut it off and try again, it revs up again. After the 4th or 5th try, I grab the hella/USB adapter and pull it out, bike immediately winds down to normal RPMs. Plug the adapter back in, all's fine and remains so for a week or so. Then it happens again, I pull the adapter, back to normal.

Thoughts anyone?

-Ken
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  #2  
Old 05-15-2018, 10:39 PM
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SKYGZR SKYGZR is online now
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Re: Weird electrical issue

Get rid of the adapter.
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  #3  
Old 05-16-2018, 01:01 AM
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Re: Weird electrical issue

And what did you hook its up to. only the battery terminals is okay.
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Old 05-16-2018, 09:20 AM
kjsimon kjsimon is offline
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Re: Weird electrical issue

Thanks for the replies. When I had the tank off, I tapped into the connector/distributer that comes off the fuse box. I believe the ignition comes off of the same terminals that I tapped into. I did that because I wanted the outlet to be off when the ignition is off to avoid accidental battery draining.
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Old 05-16-2018, 11:08 AM
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Re: Weird electrical issue

Quote:
Originally Posted by SKYGZR
Get rid of the adapter.
Obviously the most simplistic approach.

In my case with all my bikes I wire all my extra gadgets off a relay directly from the battery. The relay I activate from a switched power source (generally the tailight - don't know if this would flip out a CANBUS system but you don't have that to worry about here).

Not that difficult, and not that costly but follows the KISS (Keep It Simple Stupid) practice.
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Old 05-16-2018, 11:20 AM
kjsimon kjsimon is offline
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Re: Weird electrical issue

Thanks. And I thought I was keeping it simple but alas, you can't fix stupid. I think I'll re-wire AND replace the adapter.
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Old 05-16-2018, 11:46 AM
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Re: Weird electrical issue

Your on track now. All good suggestions above. There are several places to find a key controlled power source to trigger a relay. Use one that others have done successfully. A search on the subject will give you a whole evening of reading. There are several fuse panels also, all the way from laptop programed to basic fuse monitored. It is fun to look at them all.
Here is one link to a source. Aerostitch has some fuse boxes also. I'm too basic, all I have is a relay and a standard fuse panel with about 5 circuits on it. When you choose something, be sure to route your wires well and secure them tight. Neatness counts for much. Make a drawing of it and file it in your bike records. Do not ground devices locally, run two wires for your devices all the time, one power and the other the ground all the way back to the fuse panel.
http://www.easternbeaver.com/Main/Wi...fuseboxes.html
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Old 05-16-2018, 01:38 PM
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Re: Weird electrical issue

Quote:
Originally Posted by kjsimon
Thanks. And I thought I was keeping it simple but alas, you can't fix stupid. I think I'll re-wire AND replace the adapter.

For a K1200RS like yours (non-CANBUS obviously...), the best method is a Relay activated from a switched power source ...AND... the best power-source that will not cause interference are:
(1) IF closer to FRONT of bike: the parking light located just under the main headlight: The BROWN wire is a ground and the other wire a (+) power. See 2nd attached photo...

(2) IF tapping need is closer to REAR: the licence-plate-light power that is one wire out of a large 6 pins connector under seat. See 1st attached photo for details...

Both are switched, based on ignition being ON.
You must NOT power your accessories from this selected wire, but only use this to switch the RELAY on. The main power source should be the battery OR the distribution-fuse-box you have install (if you choose to do so).

As mentionned by BEECH, on the K1200RS/GT or K1200LT, you should NOT depend on the frame (main backbone or sub-frame) to carry a ground. You need to carry both + and minus wires from the battery to your RELAY or distribution-fuse-box.

Because you have a 1998, you could also use the tail-light wire from same 6 pins connectors, HOWEVER on later models with servos-iABS (2002-2005 K1200RS in USA), this will cause problems as the tail-light is monitored for power / amperage to detect bulb failure.
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