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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: ck971 on January 28, 2017, 09:54:40 PM

Title: Hazard lights not working
Post by: ck971 on January 28, 2017, 09:54:40 PM

Morning All,
my 1984 K100 RS has not had hazard lights since I bought it about a year ago. Is this a common fault on these bikes? Checked the switch connections and all seem OK however no power at switch. Indicators work fine as indicators.
Any clues to a fix?


Thanks

Title: Re: Hazard lights not working
Post by: Laitch on January 28, 2017, 10:19:50 PM

Quote from: ck971 on January 28, 2017, 09:54:40 PM

Checked the switch connections and all seem OK however no power at switch.

Welcome, ck971!

Where did you find those connections and how did you check them?

Title: Re: Hazard lights not working
Post by: ck971 on January 28, 2017, 11:14:06 PM

popped the switch, there are 3 wires there, put test light on and no power any where

Title: Re: Hazard lights not working
Post by: ck971 on January 28, 2017, 11:15:06 PM

also gave a hit of contact cleaner but alas no change.

Title: Re: Hazard lights not working
Post by: Laitch on January 28, 2017, 11:36:00 PM

Check and clean #12 in the illustration below. Clean the other connectors while you're at it.  :yes

Undertank connectors, from Bert Vogel's K100 Troubleshooting guide..png (117.29 kB . 360x306 - viewed 940 times)

 

Title: Re: Hazard lights not working
Post by: ck971 on January 30, 2017, 06:44:08 AM

Will do, ta.

Title: Re: Hazard lights not working
Post by: beemrdon on January 30, 2017, 11:37:53 PM

I've got a 1996 K1100 and my hazards didn't work when I got the bike. What I did was to keep switching them on and off and they started to work...sometimes. After a while of doing that, they now work perfectly. If you don't use these switches, they stop working.
The PO never rode at night so the headlight hi/low switch stopped working from lack of use. It was too late for that switch though and I ended up replacing it. I will try to take apart and clean out the old one, one of these days.

Title: Re: Hazard lights not working
Post by: The Mighty Gryphon on January 31, 2017, 12:19:27 AM

+1 on Beemerdon's reply. 

The switches in my dash pads gave me trouble until I shot some Deoxit in them.  Took a couple days of working them to get them reliable again.  I also had to pry them out of the pad and put a little Vaseline on the edges of the rocker to help it move a bit easier in the pad.

Title: Re: Hazard lights not working
Post by: ck971 on February 01, 2017, 06:25:10 PM

Thanks for that info all.

Title: Re: Hazard lights not working
Post by: rbm on February 01, 2017, 09:37:00 PM

You won't read any voltages on the wires going to the hazzard switch, except on the Blue/White one when the hazzards are working.  The flasher relay does all the magic.  You just have to ground the Yellow/Purple wire to get hazzards.  Most likely your switch is corroded as others have pointed out and you'll need to clean it, also as others have pointed out.  If you want to verify that you have operational hazzard lights, ground the Yellow/Purple wire after undoing the connector.  With the ignition on, you should get 4-way blinkers as long as the wire is grounded.

Title: Re: Hazard lights not working
Post by: ck971 on February 04, 2017, 04:58:55 AM

Thanks all,
Ended up being a dodgy switch.


Cheers
CK

Title: Re: Hazard lights not working
Post by: The Mighty Gryphon on February 04, 2017, 10:41:20 AM

 :2thumbup: Thanks for the update!

Have you posted any photos?  We like photos.

Title: Re: Hazard lights not working
Post by: ck971 on February 04, 2017, 09:15:25 PM

Will do, going on a ride this arvo, ill drag the Box Brownie out.


CK

Title: Re: Hazard lights not working
Post by: Motorhobo on February 06, 2017, 07:44:13 AM

Quote from: ck971 on February 04, 2017, 04:58:55 AM

Queers

Well, for better or worse, Johnny O is definitely back...

Non-US Brickers -- prepare to be Queers...

US-Brickers -- prepare to be Wankers! (if you weren't already)...

http://www.motobrick.com/index.php/topic,8632.msg66887.html#msg66887

Title: Re: Hazard lights not working
Post by: Laitch on February 06, 2017, 08:03:41 AM

There's no place like home. There's no place like home. There's no place like home.