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Author Topic: Late cluster on early bike, fuel light  (Read 7981 times)

Offline jhelgesen

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Late cluster on early bike, fuel light
« on: June 06, 2016, 12:03:09 PM »
So I put a new cluster on my 85 k100 to fix my odometer. Got a decent deal on a nice one off feebay.

Plugged in the new gage and all is pretty good, except my single gas light is on vs my two lights from original.

Other than swapping guts of the two clusters, what can I do to fix the light issue? 

Old



New




Thanks
John H
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Offline Laitch

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Re: Late cluster on early bike, fuel light
« Reply #1 on: June 06, 2016, 03:50:56 PM »
If your new gauge is the lower photo, the light left of the fuel light is the "choke on" light. They aren't connected on the later models, if yours is connected and working, it should light when you move the "choke' lever to one of the "on" positions. It's not needed by people who pay attention to the lever's position, and the higher revs when you pull in the clutch lever are a sure sign to close the "choke." Is the fuel light on but you have a full tank? Your problem is not clear to me.

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  • Along the Ridley in Vermont.
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Offline jhelgesen

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Re: Late cluster on early bike, fuel light
« Reply #2 on: June 06, 2016, 04:02:35 PM »
Yes, my fuel light, one next to the gas pump, is on. Comes on after a few seconds after starting.

Both lights worked correctly on the old gage.
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Offline Laitch

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Re: Late cluster on early bike, fuel light
« Reply #3 on: June 06, 2016, 04:13:50 PM »
I feel left out here. I see you've got a choke light on the right side. I don't have any choke light at all anywhere. What was the function of two lights on your old gauge. Did they both light at the same time or was one to tell you that you'd better stop and start walking? If the connections on the new instrument cluster haven't been thoroughly cleaned, I'd start there. After that, checking the internal connections would be next.
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline johnny

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Re: Late cluster on early bike, fuel light
« Reply #4 on: June 06, 2016, 04:16:59 PM »
1st thing id do is getts the oem part number off the old unit and the new unit... if not the same id getts on the max fiche and see what the new one fitts... they aints all the same you know... late cluster early moto and all...

is your moto abs... you may have to replace the entire wiring harness...

j o
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Offline jhelgesen

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Re: Late cluster on early bike, fuel light
« Reply #5 on: June 06, 2016, 04:35:53 PM »
No abs.
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Offline johnny

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Re: Late cluster on early bike, fuel light
« Reply #6 on: June 06, 2016, 04:43:11 PM »
rodger that...

what did you learn from the max fiche that you would like to share with us..

j o
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Offline Martin

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Re: Late cluster on early bike, fuel light
« Reply #7 on: June 06, 2016, 05:04:47 PM »
Early bikes had two fuel warning lights one at approx 7Lt one at approx 4Lt. This was reduced to one fuel warning light in later models.
Regards Martin.
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Offline Laitch

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Re: Late cluster on early bike, fuel light
« Reply #8 on: June 06, 2016, 05:07:50 PM »
Thanks, Martin. Do you know why they didn't provide three lights? That just seems careless.
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  • Along the Ridley in Vermont.
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Offline Martin

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Re: Late cluster on early bike, fuel light
« Reply #9 on: June 06, 2016, 05:11:30 PM »
 :dunno Cost cutting???
Martin.
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  • North Lakes Queensland Australia
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Offline jhelgesen

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Re: Late cluster on early bike, fuel light
« Reply #10 on: June 06, 2016, 05:22:54 PM »
Not much to read off this label

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Offline billday

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Re: Late cluster on early bike, fuel light
« Reply #11 on: June 06, 2016, 05:25:42 PM »
Just plug it in and ride. One light or two, it's not at all reliable. I keep track of fuel with my trip odo.
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Offline johnny

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Re: Late cluster on early bike, fuel light
« Reply #12 on: June 06, 2016, 05:29:32 PM »
i gotts my one and only fuel light to come on when i gotts 1 drop of fuel left in the tank...

if i had 3 lights it would go like this... 3 drops left 1st light... 2 drops left 2nd light... 1 drops left 3rd light...

fecking fuel lights... who uses them anyway...

because they added a fuel gauge...

j o
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Offline The Dude

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Re: Late cluster on early bike, fuel light
« Reply #13 on: June 06, 2016, 05:36:34 PM »
.....Does the light go out when your fuel is low?

Mine failed a long time ago and I don't miss it.
You should get 350km,217.48 miles before you need to plan on walking.Anyone else figured this?
Mine stutters for a coupel of miles just before it runs dry...My odo failed a few years back.
Buying new you get philosophical about these things,after all I'm crapping out as well.
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  • Auckland, New Zealand
  • K75s
Current.
TR6R 1973 from new.
Moto guzzi 850 III .1983 from,almost, new.
K75S 1986 from new.vin-0103141
On my second millionth km.give or take a hundred k Kay's.
"The Dude abides. I don't know about you but I take comfort in that. It's good knowin' he's out there."
All the best!

Offline jhelgesen

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Re: Late cluster on early bike, fuel light
« Reply #14 on: June 06, 2016, 05:53:08 PM »
A beer and a screw driver later.

I could...swap speedometers, or.... just unplug the light.

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Offline The Dude

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Re: Late cluster on early bike, fuel light
« Reply #15 on: June 06, 2016, 06:12:31 PM »
Unplug.We call them idiot lights,for a reason.
New speedo rejuvenated you're machine by many miles.
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  • Auckland, New Zealand
  • K75s
Current.
TR6R 1973 from new.
Moto guzzi 850 III .1983 from,almost, new.
K75S 1986 from new.vin-0103141
On my second millionth km.give or take a hundred k Kay's.
"The Dude abides. I don't know about you but I take comfort in that. It's good knowin' he's out there."
All the best!

Offline jakgieger

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Re: Late cluster on early bike, fuel light
« Reply #16 on: June 06, 2016, 10:03:52 PM »
The light you are referring to is the ABS light on my '89.  It flashes to show fault in the ABS. It should be a straightforward circuit, as the ABS "brain"/relay trigger it.   Not an expert here :bmwsmile, but it could be as simple as a wire swap...if, you could figure out which wire.   There are schematics here somewhere :eek:
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"What we've got here is failure, to communicate.  Some men, you just cain't reach.  So you get what we had here last week.  Which is the way he wants it...Well, he gets it.  I don't like it any more than you men do."

Offline Brahma

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Re: Late cluster on early bike, fuel light
« Reply #17 on: July 24, 2016, 09:14:16 PM »
It was a common complaint at the dealerships amongst owners that a fuel light "was always on" and extremely annoying.  The first one came on when the tank was half full.  It didn't help that the first light was bright yellow.  In response to complaints, dealerships removed the first bulb from the cluster.
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1985 K100RT (First bike, still own)
2006 R1200GS (Recorded Iron Butt Ride- Sold)
2006 K1200GT  (Sold)
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Offline Inge K.

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Re: Late cluster on early bike, fuel light
« Reply #18 on: July 25, 2016, 05:09:09 AM »
Quote from: Brahma on July 24, 2016, 09:14:16 PM
In response to complaints, dealerships removed the first bulb from the cluster.

Next mod on the early version low fuel level warning system was that all components for the 7 L
circuit was removed (and the delay time changed) from the PCB.
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