Koso Speedo Knockoff - Wrist Twisters
 
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post #1 of 23 Old 03-02-2014, 03:28 PM Thread Starter
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Koso Speedo Knockoff

So I have purchased a new Koso knockoff speedometer. Seen here: Backlight Mini Motor Bike LCD Digital Speedometer Odometer for 1 2 4 Cylinder | eBay

I will do a full write up on the install, function, and durability after a month or so of riding with it. You do have to message them to inform them of how many cylinders your bike has. You also have to tell them if your RPM signal is positive or negative. I haven't gotten to the book yet, but does anyone know which (positive or negative) the 919's RPM signal is?
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post #2 of 23 Old 03-02-2014, 08:15 PM
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Just looked at the ad and it says not for fuel injected motorcycles....

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post #3 of 23 Old 03-02-2014, 08:25 PM
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Quote:
Originally Posted by NZspokes View Post
Just looked at the ad and it says not for fuel injected motorcycles....
Thats weird. What's the difference and I wonder why it has the check engine light then?

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post #4 of 23 Old 03-02-2014, 09:28 PM
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I thought someone already tried these and never got them to work.

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post #5 of 23 Old 03-02-2014, 11:37 PM
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Originally Posted by g00gl3it View Post
I thought someone already tried these and never got them to work.
I think they would only work on single cyl or something. Wasnt that long ago.

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post #6 of 23 Old 03-03-2014, 02:36 AM
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It was Ditch ..... the one he had picked up was made for 2-stroke engines only.

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post #7 of 23 Old 03-03-2014, 01:59 PM
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Try +, if it doesn't work flip to -?

Curious how would could tell. I'll hit up the Honda master tech I know to see if he has an answer.... though outside of working hours he's iffy on tech questions.

if you love your motorcycle, set it free.. if it comes back and hits you.. you highsided
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post #8 of 23 Old 03-19-2014, 06:32 AM Thread Starter
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I am in need of some wiring skimatics to match to the gauges here. Clorox said someone emailed him one for the Koso gauge he bought? Anything helps, thanks!
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post #9 of 23 Old 03-19-2014, 07:08 AM
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I was the one that tried the Koso replica. It did not work. I wired everything correctly but it would not function. I was told after the fact that they are made for 1 cyl. engines only.
Here are the thread I posted a while back.
https://www.wristtwisters.com/forums/...ica-32444.html
https://www.wristtwisters.com/forums/...nit-32567.html

Maybe they changed since then, but I have my doubts. I have some wiring schematics in that thread I think...

2007 Yamaha VStar Classic
2005 Suzuki SV650 - traded
2003 Honda 919 - traded
2008 Aprilia Tuono 1000R - Sold
2008 Aprilia RSV1000R Track Only
2007 Honda CBR600RR - sold
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post #10 of 23 Old 03-19-2014, 07:56 AM Thread Starter
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Thanks, they specifically asked how many cylinders my engine was before they shipped.
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post #11 of 23 Old 03-19-2014, 08:08 AM
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I really hope you get it working. The unit looks awesome. Only if it could function properly. And just an FYI, the Koso mount bracket works perfect with this unit.

2007 Yamaha VStar Classic
2005 Suzuki SV650 - traded
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2008 Aprilia Tuono 1000R - Sold
2008 Aprilia RSV1000R Track Only
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post #12 of 23 Old 03-19-2014, 05:12 PM
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post #13 of 23 Old 03-21-2014, 01:00 PM Thread Starter
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Need some help

Quote:
Originally Posted by arctic954 View Post
Well --- apparently there have been quite a few people coming to WristTwisters because this thread keeps getting hits via. Google Search. So --- I keep getting PM's of people asking me for the color code wiring diagram of the Koso RX2-N to OEM harness connections.

USE THIS INFORMATION AT YOUR OWN RISK.....I'm drinking, its late, don't quote me!

To make things clear --- the Koso comes with a multi-pin single connector that plugs into the back of the unit --- on the other end is quite a few wires all color coded with bare ends ready to be soldered in.

On the other side ---- I've cut the wire harness/connectors off the back of the OEM speedometer and stripped the ends. By soldering these 2 harnesses together..... you basically make a plug 'N play wire harness for the Koso.

Don't even think about attempting this install if you don't know how to solder. The connections simply won't hold up with wire crimps.


Here are the color codes that I used.....

Koso-----------------------------OEM harness

White (right turn signal) --------------Lt Blue
Brown (RPM wire)--------------------- Yellow/Green Stripe
RED (Main Positive Power)------------Connect to the battery + terminal
Black (ground) ------------------------ Green (this wire goes to Rob's LED fuel harness)
Brown (keyed Ignition, 12v +)-------- Keyed Ignition Signal (on your own)
Lt Grey (left turn signal) ------------- Orange
Orange (oil light) --------------------- Blue/Red Stripe
Purple or Violet (FI light) ------------ White/Blue Stripe
Yellow (high beam indicator)---------Dark Blue/Black Stripe
Blue (neutral light)--------------------Light Green/Red Stripe
Green (fuel gauge indicator)----------No Connection - See below

In addition to these connections.... you have the KOSO sensors.... active speed sensor, and temperater sensors. Please see the Koso manual.


NOTES:

There are quite a few wires that are left unused on the Honda Harness side of the wiring. This is mainly due to the Koso using a master ground....and the Honda Speedo using separate grounds to the individual internal components.

The Koso fuel gauge WILL NOT WORK WITH THE HONDA 919. End of story. The Honda speedometer has electronics in it to decode the information for the thermister sensor in the gas tank. The Koso does not know what to do with this information.......Please see Rob Tharalson's fuel reserve LED thread - he created a stand alone LED solution.

The turn signals WILL NOT blink on the face of the Koso gauge....however your blinkers will still work as normal. Again.....electronics that were inside the Honda speedometer made the bulbs blink.... To be honest.... not that big of a deal....



So on the keyed ignition signal what should I tie it too? And what would be the best method for running main power back to the battery terminal?
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post #14 of 23 Old 03-21-2014, 01:19 PM Thread Starter
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In addition the 919 speedometer has R/G and P/G going to it? Do you splice these?
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post #15 of 23 Old 03-22-2014, 05:28 AM Thread Starter
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Raise the white flag

Plugged everything in properly and the gauge turned on (I was ecstatic) . It looked awesome with red and blue LEDs on the start up! RPMs didn't work but all I wanted was speed ..... I get going around the block slowly because I'm in my neighborhood ..... 199 kph and climbing...... I am done trying to get this to work.
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post #16 of 23 Old 03-22-2014, 05:50 AM
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Thats exactly what i had going on with mine... Never could make it work so got the real thing...

2007 Yamaha VStar Classic
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2003 Honda 919 - traded
2008 Aprilia Tuono 1000R - Sold
2008 Aprilia RSV1000R Track Only
2007 Honda CBR600RR - sold
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post #17 of 23 Old 03-22-2014, 05:52 AM Thread Starter
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Quote:
Originally Posted by bpolunin View Post
Thats exactly what i had going on with mine... Never could make it work so got the real thing...
That's what I'll be doing now...
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post #18 of 23 Old 03-22-2014, 07:37 AM
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Didn't someone post about a month ago on getting a killer deal on a Koso RX2N?
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post #19 of 23 Old 03-22-2014, 08:08 AM
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Quote:
Originally Posted by Wolf View Post
Plugged everything in properly and the gauge turned on (I was ecstatic) . It looked awesome with red and blue LEDs on the start up! RPMs didn't work but all I wanted was speed ..... I get going around the block slowly because I'm in my neighborhood ..... 199 kph and climbing...... I am done trying to get this to work.
Does it use the stock speed sensor signal? Maybe there's a setting someplace to adjust the number of pulses per revolution?

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post #20 of 23 Old 03-22-2014, 12:02 PM
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If you have given up on this unit completely, rather than jumping all the way to a Koso, have you considered an Acewell unit?

I don't "speak" electronics at all, but a few years ago had complete success installing one on a Gas-gas enduro bike that gave me full functions - revs, speedo, odo, and water temp.

You might find a unit that gives you the functions you want - I see Youtube has at least one Honda installation:

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post #21 of 23 Old 03-22-2014, 01:42 PM
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I'd use a trailtech Vapor before I used an Acewell on a bike like the Hornet. The Acewell, in my opinion would look fine on a nostalgia bike, or a cruiser of some type where you don't want a huge dash or tach.. It should wouldn't look at home on a Hornet is all... That being said I'd be inclined to us a KOSO DB-02R before I moved on to the Vapor gauge though. Nothing wrong with the vapor at all. I had one on my last Hawk, have one for my current Hawk, but am debating on whether to use it or look into the DB-02R or the RX-1N...

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post #22 of 23 Old 03-22-2014, 10:14 PM
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Oh, I like that Acewell 3913.

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post #23 of 23 Old 03-22-2014, 10:30 PM
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ah see for some reason the video didn't show up for me earlier. I'm used to the old Acewell analog units, lol.

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2000 DL650 - Being ridden but make me an offer if interested...
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