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Installing a Koso MS-01 on my G310R, begins the nigthmare

2.4K views 7 replies 4 participants last post by  JerryG  
#1 · (Edited)
Hello:
I decided to install a Koso MS-01 on my G310 and I think this was not a good idea, at this moment, but I'm trying to revert that.
I'll try to explain where I'm and in what I'm working.

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Replace stock speedometer in a BMW is not a good idea, is very far to be plug&play. The original one have 2 connectors, one of them are basically all wires for turn light signals and the fuel gauge (greens and purples are for turning signals). The other one have negative, positive to bat and positive to key and other two wires with a low voltage (canbus signal) and that's all. All lights, sensors and so on are in canbus signal.

Speed sensor must be installed the Koso one, because the original wire is also for ABS signal and the koso is easy to install and setup.
Fuel Gauge is direct connection and using the 510 ohm it works.

And thats all you can connect easy (also tension, of course)

Here begins nigthmare.

For turn light you need to add a relay and rebuild all wiring, and the stock switch maybe will work but mine isn't, and while I'm waiting for a solution I placed an external switch. It is 'working'

For temperature, I've bought at amazon an adapter and placed the koso temperature sensor because impossible to read from original one, and it works.

For RPM signal, I'm planing to connect the wire from ignition coil signal, but I'm waiting an answer from koso to know (I supose yes but I don't want to burn anything) if it's possible to manage the voltage.

And here starts the unkown, how I can wire the lights? maybe decript the signal from canbus? looking for wires from sensors?
 
#2 ·
For neutral light, I've tried to get signal from gear sensor, but it has 3 wires and I can't get any useful signal to convert it to a positive to send to koso.

For ABS warning, I'll try to take signal from ABS computer to main ECU.

For the other ones, no idea.

Any suggestion will be welcome. Of course,a wiring diagram will help, but impossible to find it, and technical info is missing.

My Koso looks amazing, but hard to make it work. The rollback option isn't possible, I hate it.

Sorry for this long thread and for my bad English
 
#6 ·
I am not techy, but have read right here on this forum that BMW themselves stated there is no CAN bus on the G310. Probably for cost reasons.
My assumption was that it uses normal wiring with fuses, but could be wrong.
I have a G310GS in Arizona that I will ride the first time in a couple of weeks. I'll look at the wiring then & be able to answer more intelligently.
Maybe someone here already knows the details of the G310 wiring system.
 
#7 ·
Yes not CANBUS old school with fuses. I’d agree that while it looks nifty, why disturb a perfectly functional set up? One could add a Vapor or such if require more data like temperature.
 
#8 ·
The Apache RR 310S wiring diagram might help (below); I've also attached a PDF version to this post. The Apache RR 310S Service Manual has a complete Electrical System Section, but that document is too large to attach, so here's a OneDrive download link to my copy...

TVS Apache 310RR Service Manual.pdf

That said, I think what you are doing falls in the "not viable" category and that you should reverse everything to restore the bike's original setup. As you can see below, the "Speedometer Assembly" is connected to pretty much everything.

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