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Old July 25th, 2019, 08:12 PM   #1
Source_1
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Fixing an aftermarket ignition for ex250f

So i bought this bike for decently cheap because the last owner bought a bunch of stuff for it without getting it to fire off. I think the issue is with the aftermarket ignition system they installed. Iv'e noticed that you need a 100 ohm resistor wired in to the grey wire in the ignition. I just need to know where exactly it needs to be wired in. The wire it'self? or on the panel where the wires separate?

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Old July 26th, 2019, 12:32 AM   #2
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Anywhere between ignition-switch and ECU is fine.

It's like light-switch for ceiling light in kitchen. You can put switch at fuse-box in basement, on kitchen wall, or on ceiling next to light itself. As long as it's between light-bulb and fuse-box, it'll work just fine.
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Old July 26th, 2019, 11:45 AM   #3
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the wire looks like this. with two nodes.

--------------@-------@



so like just anywhere before the nodes are solders is fine?
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Old July 26th, 2019, 02:45 PM   #4
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By nodes you mean connectors? Doesn't matter how many connectors there are. Could be 20 or 50-billion. As long as resistor is somewhere on grey wire between igniton switch and ECU (IC ignitor) is what matters


[ IGN-SW ] -------------------------- 100ohm ------------------------------[ ECU ] or

[ IGN-SW ] -----@----@---@-@@- 100ohm --@--@-@-@-@-@- [ ECU ] is same as

[ IGN-SW ] - 100ohm ----@-@-@---@-----@------@---------@-------@- [ ECU ] is same as

[ IGN-SW ] ---@---@--@------@------@------@-----@----@-------@-100ohm- [ ECU ] is same

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Old July 26th, 2019, 02:55 PM   #5
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Old July 26th, 2019, 10:28 PM   #6
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Ok I think I get it. Thank you very much for the help!
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Old July 26th, 2019, 10:49 PM   #7
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Quote:
Originally Posted by Source_1 View Post
Ok I think I get it. Thank you very much for the help!
You're most welcome! What most people do is splice it in somewhere on grey-wire between ign-sw and first connector (big rectanglar one). What year is your bike?
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Old July 27th, 2019, 04:07 AM   #8
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It’s a 2005. Spent ages looking for a cheap bike to learn on.
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Old July 29th, 2019, 10:50 AM   #9
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Just posting an update to anyone who is having this problem. The resistor did the trick, and it now has strong spark.
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Old July 29th, 2019, 01:34 PM   #10
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Awesome work!
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