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Old 03-10-2012, 09:23 AM   #1 (permalink)
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Default KOSO db01r wiring help needed

so i just received my koso db01r in the mail last week and I've been trying to figure what wires go where on my bike. i have an 07' ninja 650r. i have most of it figured except for a couple of wires.

my OEM harness has a positive battery wire AND an ignition wire. however the KOSO only states to have an ignition wire. where does this positive battery wire go?

i wanted to run the speed sense wire from the KOSO to the speed sensor already on my ninja, so i could avoid the tacky wire down my front forks for using their supplied speed sensor. my OEM harness has a speed sense power wire and a speed sensor reading wire. the KOSO has a pre-harnesed speed sensor wire that simply plugs into its provided speed sensor. its three different wires, however. i assume one is a ground and the other is the speed sensor reading however i don't know what the third wire is or where to put it.

lastly is the tachometer wire. KOSO has an rpm wire, and my OEM harness has a tachometer wire. however, KOSO also provides a direct coil wire connection that plugs into the coils and then straight into the wire harness. i am not sure whether to do what KOSO tells me to do and plug straight into the coils, or to just wire straight to the OEM tachometer wire.

I've seen a few people have the KOSO on their bike but none of them get back to be on how they wired it in. much help would be appreciated!
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Old 03-10-2012, 02:49 PM   #2 (permalink)
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I've been messing around with this and I was going to do a bit of a write-up when I was finished. I've got mine working though so I can answer your questions at least!

Quote:
Originally Posted by quick56 View Post
my OEM harness has a positive battery wire AND an ignition wire. however the KOSO only states to have an ignition wire. where does this positive battery wire go?
There are two +12V wires, one from the ignition and one from the ECU. Use the one from the ingnition.

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its three different wires, however. i assume one is a ground and the other is the speed sensor reading however i don't know what the third wire is or where to put it.
The Koso has three wires;
+12V (Red)
-12V (Green)
Signal (Brown)

You will need to connect the positive 12V and signal wires to the speed sensor on the bike. The brown ground needs to be connected to the black ground wire on the Koso.

Quote:
Originally Posted by quick56 View Post
lastly is the tachometer wire. KOSO has an rpm wire, and my OEM harness has a tachometer wire. however, KOSO also provides a direct coil wire connection that plugs into the coils and then straight into the wire harness. i am not sure whether to do what KOSO tells me to do and plug straight into the coils, or to just wire straight to the OEM tachometer wire.
Just chop the connector off and wire it to the bike's signal wire that comes from the ECU, easy!

I managed to figure out the make and model of the connector (an MX34, 16 connectors by JAE) on the OEM clocks and then find a supplier that would ship less than 100 units. This meant that I could wire my Koso to the connector instead of straight in to the bike, like this:


Last edited by bob_hackr; 03-10-2012 at 02:54 PM.
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Old 03-10-2012, 02:51 PM   #3 (permalink)
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Once you do get it connected up, use the settings that Horlicks recommended in this post Horlicks er6n Db01r wiring diagram/installation.

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Originally Posted by horlicks View Post
Once installed you then have to set information on guage as follows.
Mph/kph
Wheel diameter - 1830
Sensor points - 04P (these are on front drive sprocket)
Coils - 4C
Pistons - 2P
Coil setting - Hi (in my case)
Fuel sender range - 100 ohm (in my case)
Though for some reason, on my bike I had to set the number of sensor points to 12 to get the correct speed reading.
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Old 03-10-2012, 04:28 PM   #4 (permalink)
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[QUOTE=Though for some reason, on my bike I had to set the number of sensor points to 12 to get the correct speed reading.[/QUOTE]


I just got out on my bike for the first time today since installing a Koso gauge, my speedo was WAY off with 4 sensor points, i gradually adjusted it up as far as 10 before thinking i had wired it up wrong and giving up. Glad i read this, it was getting close with 10, im certain it will work with 12, thanks for this!!
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Old 03-10-2012, 04:44 PM   #5 (permalink)
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I'm not 100% that 12 points is the correct setting, I need to check it with a GPS. It does seem correct, or very nearly correct though.

If you've got a GPS and can figure out the exact number, that would be great!
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Old 03-11-2012, 03:21 AM   #6 (permalink)
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Can't thank you enough bob for the help, I'll be wiring it in tommorow (or today since it's so late) and let you guys know how it went. Only one last question, did you wire the speed sensor to your oem sensor? And if so, will having an aftermarket sprocket affect the reading? Also I heard that the oem speed sensor puts out 12v and the Koso speed sensor can only take 4v? I suppose if you've done this already it's not true. And which end( positive or negative) of the Koso speed wire connects to which end( speed signal or speed power) to the bike?

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Old 03-11-2012, 07:20 AM   #7 (permalink)
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The Koso is 12V DC so you don't have to worry about that. It might supply 4V to the sensor, but I don't know.

To connect the speed sensor to the Koso, you just need to figure out what the wires are on the harness to the original connector. I don't want to say which colour it is on the bike in case it's different for the 2007 model (I have the updated 2009).

You need to connect them something like this:
Koso speed sensor+12V (Red)-----------Speed sensor positive wire
Koso speed sensor -12V (Green)----------Koso black -12V wire
Koso Speed sensor signal (Brown)---------Speed sensor signal wire
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Old 03-11-2012, 07:35 AM   #8 (permalink)
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Quote:
Originally Posted by bob_hackr View Post
I'm not 100% that 12 points is the correct setting, I need to check it with a GPS. It does seem correct, or very nearly correct though.

If you've got a GPS and can figure out the exact number, that would be great!
Ahhhh im afraid i dont, i was hoping you had done this already or something similar haha.

I will go for a ride with my friend in his car and try matching speeds with him at 30 50 and 70 or something, not exactly accurate i know but better than nothing.

If you do find a better way to test it i would love to hear about it!
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Old 03-11-2012, 09:38 AM   #9 (permalink)
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Well I should hopefully be getting a GPS in the next couple of weeks so I can let you know if it's right!
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Old 03-16-2012, 03:59 PM   #10 (permalink)
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Having trouble w my speedo that's directly to the eom sensor. It's like it's reading the tach for the speedo but I know it's wired right

Red Koso speedo to pink oem speedo Power

Green Koso speedo to the black/yellow oem ground

Brown Koso speedo to the green/red oem speedo signal

I do have a power commander installed so I'm not sure if that could be the problem or not...


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