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· You should listen to me. No, seriously, listen to
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See the wiring diagram at the back of the service manual and either the ECM terminal diagram on page 4-15 or this. AFAIK the pin numbers on the cluster connector in the wiring diagram are from 1 to 16 with 1 on the left.
If you have a cluster, I think you can see the corner pin numbers marked on the circuit board. If it was a better picture (or the case was removed), you could probably see them here:
 

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Discussion Starter · #3 · (Edited)
I removed the case but didn't find any numbers or hints so in the end i used the same pin numbers as the hayabusa connectors use but sadly no luck. The local Suzuki dealer couldn't help me either. So now i'm back at sqare one.
 

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Aren't there numbers like on this?

You can see 9 and 16 but 1 and 8 are probably there too. My K6 cluster has them. Here's someone else's K5/K6 and you can see 7 in one corner:

I can see what looks like a 16 (faintly) here:
 

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Discussion Starter · #5 ·
Aren't there numbers like on this?

You can see 9 and 16 but 1 and 8 are probably there too. My K6 cluster has them. Here's someone else's K5/K6 and you can see 7 in one corner:

I can see what looks like a 16 (faintly) here:
Your right and i think i'm blind. I don't know how i coud miss them not once but twice🤦‍♂️.
Unfortunately the order is the same as the hayabusa plug. This is the order i tried that didn't work:
Handwriting Rectangle Font Pattern Parallel

Schematic Rectangle Font Parallel Engineering

And this is what i sourced from pictures on the internet:
Handwriting Rectangle Font Line Parallel

I'm 95% sure about the ones marked in green. The other ones are educated guesses. I don't know how they would correspond to the circuit diagram.
 

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Here's the pinouts and wire colours for a 2010 (L0) dash. As I understand it, the K8 & K9 are the same.
Bottom right is pin 1, top right is pin 8
Handwriting Font Material property Parallel Rectangle
Font Material property Parallel Pattern Paper

On this dash, the connector is different to that shown in Bill's pics, but the pin numbers (1, 7, 8 & 16) are clearly marked on the pcb (not the connector) & can be seen with the dash assembled.
 

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Discussion Starter · #7 ·
The 1000 k8 & k9 aren't the same. The k9 has a metering function wich is displayed on the lcd. Also the plug has 20 slots instead of 16. Here is the speedometer pinout for the k9 if anyone needs it:
Handwriting Rectangle Font Parallel Music
 

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It should be possible to figure out what some of the pins correspond to with an ohmmeter. First look for an eight pin semiconductor labeled RL56. If you have one, pin 1 is on the lower left in my second pic above. Note its location relative to the indentation along the bottom. Pin 5 is the ground and is located on the upper left. You should be able to find continuity between that pin and one on the connector. That will identify connector pin #2 and the B/W lead. Similarly one side of the high beam LED should have continuity with one on the connector. That will identify pin #9 and the B/Y. One side of the neutral LED should identify pin #10 and the Bl/B. That should be enough to figure out how things are laid out.
 

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Discussion Starter · #11 ·
I want to run a 1000 k8 ECM on my 750 k7 and initially thought i would change the k7 harness to fit my needs and bought a 1000 k9 harness to steal the connectors from but changed my mind in the process and changed the k9 harness to fit my 750 (this was easier).
So one thing led to another...
 

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I find it interesting that your K9 layout above matches the service manual's wiring diagram, unlike K5/K6 and K7/K8. It was the first time that a color diagram was used and they apparently did some rethink.
 

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Discussion Starter · #13 ·
I find it interesting that your K9 layout above matches the service manual's wiring diagram, unlike K5/K6 and K7/K8. It was the first time that a color diagram was used and they apparently did some rethink.
Indeed. I also don't understand why they didn't do it in the first place and why the ECM is displayed correctly and other connectors aren'to_O
Well i guess better late than never.
 

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Many earlier diagrams showed the leads from the connector to the cluster's LEDs, as seen in Engenia's second pic above. To simplify the lead routing, they shuffled the connector lead positions around. K7/K8 seems to be a transition year with no LEDs or leads to them but with the lead positions remaining shuffled. In K9 the LEDs/leads were again missing but the connector leads were properly organized. I created a color K5/K6 wiring diagram and simply added pin numbers to the shuffled positions (several of the LEDs and the leads to them were repositioned so the leads were further shuffled). Until today I never noticed that the LEDs and the leads to them had been omitted in later years.
 

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They actually got the circuit for the neutral LED back to front. It is activated by pulling the line low, & all of the diagrams I've seen have that line connected to the anode, which can't possibly work. ( I corrected it on my pic above) By removing the LEDs from the wiring diagram, they removed any chance of getting it wrong ;)
 
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