K11 Owners Group

[aries]

Hi Ya-all
I would appreciate some help from you electrical wizards out there. There is mention in past forums regarding a side stand warning light, but Im as thick as my brick electrically
I`v dissconected the cable from the sidestand micro switch at the connector and joined the wires to enable the engine to run with sidestand down. But how can I rig up a warning light to remind me the sidestand is down before pulling away?? Iv tried but blown a fuse in my head Thanks for any help.
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Bikes in garage
K1100RS 1994
K1600GT 2012
650 GS 2003
1500 Goldwing 1995
750 Norton Commando 1972

[Off the grid]

Check the tech section, I think Drake has a lighted sidestand mod in there.
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Bane of your existence since July 2006
2007 Triumph Tiger ABS. "Sabertooth"
2009 Husqvarna TE610. "The dirty Italian mistress"

[aries]

Yeh, Iv seen the thread, very interesting by Mr duck But there are no specific details as to how to connect/bypass the wiring so that a warning light is on when sidestand is down.
Iv tried playing around with a relay, but basically Iv not a clue and the theory is one relay should do it, but obviously not in my hands!!!
Again, any help appreciated.
_________________
Bikes in garage
K1100RS 1994
K1600GT 2012
650 GS 2003
1500 Goldwing 1995
750 Norton Commando 1972

[K11Martin]

When you've disconnected the switch, you end up with two wires which come from the switch, but now do nothing.

If simplicity is your watchword, connect one to ground, then connect the other one through a bulb and on to an ignition switched 12V (which you can pick up from the rear brake light switch). You can use a buzzer instead of (or as well as) a bulb, and you will get noise/light while ever the sidestand is down and the ignition is on.

To be clever, instead of connecting the first wire to ground, connect it to the warning lamp terminal on the alternator and it will only operate the light (and/or buzzer) when the engine is running as opposed to simply when the ignition is switched on.

There are two possible wires on the brake light switch and if you find your indicator only comes on when the brake lever is pressed, you've connected to the wrong wire of the two .
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Currently riding a '93 K1100LT (ABS1) decked out with lights and aerials (Ex 70's Vespa rider)

Why not join the UK owners club at http://forum.bmw-club.org.uk/

[Flying Duck]

To start with you need a normally closed relay. Sometimes in the automotive world they are called 5-pin relays but you have to be careful as sometimes they have two normally open 87 terminals (handy for driving lights) instead of an 87 and an 87a (normally closed) terminals. IF you're using an automotive relay make sure it has the 87a pin.

Or you can do what I do for small loads and use printed circuit board relays because they’re smaller and cheaper. To wire them up I take four pieces of wire and put a hole down the center of the end of the wire with a fairly large sewing needle. Then you can slip the wires onto the pins of the relay. Then wrap around the relay with electrical tape and fill the back with epoxy. Once the epoxy has cured remove the tape and your little relay is wired up and ready to install. You can test that your wiring is good with a 9 volt transistor battery. When you put 9V to the top two terminals, you should here a click and the circuit between the pins labeled 30 and 87a should be broken. Search on eBay for "dpdt 12v" to find a relay. They're very common.

Here’s what one of my finished products looks like:




And here’s a wiring diagram of how to hook things up to make the triangle light in the instrument cluster for the bulb monitor illuminate The BMU is the black relay on the left side inside the relay box. If you unbolt it you can pull up the relay and get access to the white/blue wire which lights up the triangle light when it is grounded.

I numbered the pins to correspond to what the terminal markings would be on an automotive relay.




What happens is that the normally closed circuit between 30 and 87a (sending a ground to the BMU bulb) is broken when the sidestand comes up, closing the switch and grounding the 86 pin to trigger the relay.
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

[aries]

Thanks very much for your replies and ideas. I will attempt to put both ideas into practice, then choose one!!
As today is particularly grey outside its a good day for a fiddle in the garage. Not that I`m a fair weather rider I hasten to add!!!
_________________
Bikes in garage
K1100RS 1994
K1600GT 2012
650 GS 2003
1500 Goldwing 1995
750 Norton Commando 1972