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Old 02-17-2013, 04:22 PM   #1
Chaddy
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ignition help 99 cbr900rr

I just picked up a 99
CBR900RR last night and the ignition cylinder is broken. Previous owner bypassed the key hole and put in a toggle switch on power wire and used that to toggle on power and start it. I'm having some trouble getting it to start and think either the toggle switch burned out or something else might be happening. I need the bike to get to work tomorrow so any help would be appreciated ASAP! thanks!

Ill try to post a picture in a minute
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Old 02-17-2013, 05:17 PM   #2
Patrick
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Can you give a bit more info?
Does everything turn on?
If so, does the engine turn over but won't start?
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Old 02-17-2013, 05:54 PM   #3
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the bike isnt getting any power at all, Ill post a couple pics right now with more info
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Old 02-17-2013, 06:01 PM   #4
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IMG 0482 zps2544afaf
IMG 0484 zpsf0210c23

The ignition cylinder broke at the bottom where the wire come out, The previous owner spliced in a toggle switch to basically bypass the key. So when the toggle switch is engaged its the equivalent to the key being turned to the "on" position. Right now the bike isnt getting any power when I toggle the switch on. I will be ordering a new ignition cylinder but I need it to work for a couple days so I can get to work. any suggestions as to what it might be? there is a small transistor thats cracked on the plastic piece that broke off the ignition cylinder, but Im not sure if that matters since the key was bypassed.
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Old 02-17-2013, 06:23 PM   #5
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What happens if you tie the 2 yellow wires together?
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Old 02-17-2013, 06:40 PM   #6
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what part of town?

and you know what a transistor is, but you can't figure out why your bike has no power..?

start simple - battery, fuses, power to switch, connector at starter relay, etc..
93 94 wiring diagram 900rr
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Old 02-17-2013, 07:20 PM   #7
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nothing happens when I tie the two yellows together. Im in Pasadena, if you can swing by and help thatd be great. I have a 6 pack of Heineken as payment lol. I'm a beginner to electric work so this is kind of overwhelming. I picked up a new toggle switch and that didnt help. heres a picture of the resistor, not transistor, thats cracked. (Like I said Im a noob) photo zps0adac3f6
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Old 02-17-2013, 07:58 PM   #8
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1. Battery
2.Fuses
3.Relays

A few things I would check.
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Old 02-17-2013, 11:42 PM   #9
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Quote:
Originally Posted by Chaddy View Post
nothing happens when I tie the two yellows together. Im in Pasadena, if you can swing by and help thatd be great. I have a 6 pack of Heineken as payment lol. I'm a beginner to electric work so this is kind of overwhelming. I picked up a new toggle switch and that didnt help. heres a picture of the resistor, not transistor, thats cracked. (Like I said Im a noob) photo zps0adac3f6
That's why it won't start.
The resistor/diode supplies a low voltage signal to the ECM to allow the bike to have spark.
You need either a key switch out of a CBR900 or F4 or you can replace it with a 0.5watt 3.9v zener diode.
You can get one at Radio Shack.
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Old 02-26-2013, 01:13 PM   #10
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ignition help 99 cbr900rr

That's what I used on mine when I went to a toggle switch.
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Old 02-26-2013, 01:17 PM   #11
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meant to post earlier but I found out it was the main fuse, I replaced it and spliced in another 30A fuse from the toggle switch and havent had any issues since. Im waiting ont my new key set to arrive any day now
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Old 02-26-2013, 01:44 PM   #12
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Quote:
Originally Posted by Chaddy View Post
I just picked up a 99
CBR900RR last night and the ignition cylinder is broken. Previous owner bypassed the key hole and put in a toggle switch on power wire and used that to toggle on power and start it. I'm having some trouble getting it to start and think either the toggle switch burned out or something else might be happening. I need the bike to get to work tomorrow so any help would be appreciated ASAP! thanks!

Ill try to post a picture in a minute
Was it previously titled to Chris 5.0?
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Old 02-27-2013, 06:31 PM   #13
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Quote:
Originally Posted by Blanco View Post
Was it previously titled to Chris 5.0?
I'm not sure I got it from a guy that works at a Just Brakes in the Woodlands
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Old 02-27-2013, 07:08 PM   #14
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Okay so I recieved the new key set and the plug did not fit up with the harness. It had 4 wires though so I decided to cut the plug off the new one and wire it up to the old harness. The color of the wires are different but I tried to match them up to the corresponding spots off the old ignition set. I still didnt get any power though, suggestions? 1 zps477cbb5f

2new zps23af2ad5
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Old 02-27-2013, 07:11 PM   #15
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And I already tried
Black-Red
Black/white- Red/Black
Red- Blue/Yellow
Green-Pink

and
Red-Red
Black/White-Red/Black
Black-Blue/Yellow
Green-Pink
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Old 02-27-2013, 07:12 PM   #16
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fuses are all good too
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