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Old 09-08-2012, 08:56 PM   #1 (permalink)
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Question Wire Diagram For CDI

im looking for the wire diagram for the cdi, i am currently rebuilding a 88 WR500 and i have everything plugged in but a yellow wire that come from the cdi box and i have no clue were it goes???
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Old 12-31-2012, 12:46 AM   #2 (permalink)
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the yellow wire i think is also for the ignition coil, it does not have to be connected, now if you ever have a coil problem you can get a coil off a car with dual outputs (for 2 leads off one coil), if you ever have a CDI problem then read below;

You can modify these easily and cheaply folks, as an ex electronics guy i have found the fix, the problem with most 500, 650 and some others is that the CDI box has a rev limiter, you can order a CDI through jaycar electronics $50 AUD, or you can order a high performance CDI off ebay.

The CDI off jaycar works like a dream, beware though the main diode coming off the charge coil may blow so replace with a 40volt 3 amp schotsky diode parallel with the 5804 diode.

Be warned though, this thing now flies but you need to limit the revs otherwise your head will blow.
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Old 01-24-2013, 04:33 PM   #3 (permalink)
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So the JAYCAR CDI blew again,

here is the CDI i purchased off Ebay at this site

High Performance Racing CDI For motorcycle GY6-Style engine Scooter DirtBike ATV | eBay

Please note that the jetski will rev out unhindered, so you need to get an RPM and limit it to it's maximum otherwise you'll blow the damned thing.

i can email the wiring diagram for this unit directly to you.
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Old 04-09-2013, 09:23 AM   #4 (permalink)
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Hi viper000 my son has a yamaha wr500g jetski with cdi problems & I would like to try your solution! Could you please email wiring diagram or let me know what colours go were on the high performance racing cdi ? Thx stepoff
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