Author Topic: Instrument cluster interchangability  (Read 1687 times)

Offline aces59

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Instrument cluster interchangability
« on: August 13, 2020, 07:07:50 AM »
Gents
Theres obviously a lot of similarity between instrument clusters but is there any info out there on interchangability.
My specific question is :-
I have a 1992 build K75S and have just removed the ABS.
I would like to fit a not ABS dash - they appear to have two petrol level warnings instead of one and ABS.
Can I do this? will the second petrol warning work?
Cheers
Steve
  • Bucks - UK
  • 1993 K75S, 1972 A65

Offline Skunky

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Re: Instrument cluster interchangability
« Reply #1 on: August 13, 2020, 08:26:55 AM »
Hi Steve, As far as I can see from the wiring diagrams only K100's make use of both lamps for fuel levels. K75's only use one lamp. I'm sure k75 owners will tell me if I am wrong.
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Offline Laitch

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Re: Instrument cluster interchangability
« Reply #2 on: August 13, 2020, 08:36:55 AM »
Two-level fuel lights occurred on early model Bricks until the fuel level sender was changed from a thermistor-style located on the tank's underside on the left side, to a float-style located on the tank's underside on the right in later models. If your moto's tank is stock then it will have a float-style sender identifiable by a rectangular panel on the underside with wires attached to it. That sender should activate the light only at approximately 4L of fuel.

When the float-style sender was brought into production, the 7L light was connected to the ABS monitoring system and the ABS label added; in moto's without ABS, that light was not connected and was without a label. You should be able to use your current instrument without problems. 
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  • 1995 K75 89,000 miles
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Offline aces59

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Re: Instrument cluster interchangability
« Reply #3 on: August 13, 2020, 11:08:17 AM »
Thanx Guys - So I read that as - The instruments will work but the dual level fuel functionality will not.
On that basis - my simplest option is black insulating tape over the ABS light :-)
  • Bucks - UK
  • 1993 K75S, 1972 A65

Offline Laitch

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Re: Instrument cluster interchangability
« Reply #4 on: August 13, 2020, 11:17:44 AM »
 112350
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles
I wept because I had no radials until I met a man who had no splines.
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Offline The Mighty Gryphon

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Re: Instrument cluster interchangability
« Reply #5 on: August 13, 2020, 12:38:44 PM »
One thing that may affect the interchangeability is the pins that connect the cluster to the wiring harness.  There are two different shapes for the pins used over the years and I don't know if the connectors will work with both shapes. 
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
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'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline aces59

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Re: Instrument cluster interchangability
« Reply #6 on: August 13, 2020, 12:45:10 PM »
Thanx TMG that's useful to know, Although Laitch has now probably put me off the idea as my current panel works well enough apart from the annoying ABS light!
Cheers
Steve
  • Bucks - UK
  • 1993 K75S, 1972 A65

Offline Laitch

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Re: Instrument cluster interchangability
« Reply #7 on: August 13, 2020, 01:23:18 PM »
. . . my current panel works well enough apart from the annoying ABS light!
If you pivot the tank upwards from the rear, you could open the relay box then remove the blue ABS relay. That should shut off the light and conserve your tape supply.  :laughing4-giggles: It's just not as simple a strategy as tape.
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles
I wept because I had no radials until I met a man who had no splines.
https://tinyurl.com/RillRider
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Offline Skunky

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Re: Instrument cluster interchangability
« Reply #8 on: August 14, 2020, 02:49:54 AM »
Or just replace it with the speed trap warning light.


* warning.png (49.97 kB . 768x533 - viewed 318 times)
  • Derby GB
  • BMW K100lt
Rebuild it and they will come..
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Honda CB400F

Offline aces59

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Re: Instrument cluster interchangability
« Reply #9 on: August 14, 2020, 08:11:53 AM »
Ah - Thanx - will do that
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  • 1993 K75S, 1972 A65

Offline volador

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Re: Instrument cluster interchangability
« Reply #10 on: August 15, 2020, 03:14:52 AM »
'83-85 K100 connector has flat pins



post '86 connector has round pins. If removing the relay don't work you could probably cut wire to pin 8 to stop blink light

  • NYC NY
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Offline Laitch

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Re: Instrument cluster interchangability
« Reply #11 on: August 15, 2020, 06:19:57 AM »
The first chart of Reply #10 is inaccurate and should not be used as a general reference. If it were accurate, instrument clusters could not be swapped for each other regardless of their pins' profiles because four of the pin connections significantly differ between the model years. That is not the case. Regarding differing pin profiles: there are several posts at various classic Brick sites that indicate cluster pins have been mated to sockets having differing profiles with or without some tweaking of the pins. Whether that type of swap will work in all cases is uncertain.

All diagrams and charts are likely to have some inaccuracies but these in the first chart of Reply #10 could cause obstacles if trying to diagnose malfunction in the cluster. The corrections to the first chart are as follows. They can be verified using wiring diagrams from various sources.

The first chart in Reply #10 should have the same entries as on the second chart in Reply #10 regarding these pins:
  • Pin 16 should read Tach sensor from coils not Speed sensor from coils
  • Pin 21 should read Turn signal cancel on flasher relay) not Tach sig.
  • Pin 22 should read Speed sensor not Tach pulse encoder
  • Pin 23 should read Ground from Speed sensor not Tach pulse encoder
I have attached the source chart for these corrections here. The second chart in Reply #10 is a fragment of it.
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles
I wept because I had no radials until I met a man who had no splines.
https://tinyurl.com/RillRider

Offline volador

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Re: Instrument cluster interchangability
« Reply #12 on: August 15, 2020, 02:26:35 PM »
I shall take my flogging now... Thank you Professor. May I have another?
  • NYC NY
  • 1991 K100RS 1993 K75S ABS
5 BOROUGHS SISYPHEAN SOCIETY  MAINTAINING THE OBSESSION

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