Aftermarket CDI for Templar 250 fail. Help..?

solidsnake2431 · 03-23-2024, 09:03 PM

So.. I bought an aftermarket CDI to disable the rev limiter and also increase the ignition timming. I bought the correct one for DC but somehow when I plugged it in and went to turn on the bike there was no power to anything so I found it popped the thin red wire fuse by the battery!! The crazy part is that it popped the fuse even though the bike ignition and everything was switched off! This does not make any sense.

Apparently one of the CDI wires in the harness must cross a power wire with a ground. If I can find what one I can probably rewire or disconnect the wire that is causing the problem. I know it's a longshot but anyone have any ideas on what wire could be causing the problem and how to fix it?

solidsnake2431 · 03-23-2024, 09:06 PM

All the wire colors match up except for like 2 on the bike are black but the CDI has a different color for both. I guess that is where the issue is but how do I fix it?

**JerryHawk250** · 03-24-2024, 06:45 AM

Put the stock cdi back in and send back the new cdi. I never had any luck with them. I was sent the wrong type cdi several times before I received the correct one only to find out the bike ran better with stock.

Mudflap · 03-24-2024, 10:34 AM

I agree with Jerryhawk, the stock CDI is best. The aftermarket "performance" units I've tested had too much advance to the point they were unusable.

solidsnake2431 · 03-25-2024, 02:16 PM

Quote:

Originally Posted by Mudflap

I agree with Jerryhawk, the stock CDI is best. The aftermarket "performance" units I've tested had too much advance to the point they were unusable.

Yes I have used them before with luck. What do you mean by unusable? How did you know they were unusable? I know a lot have too much advance on start up

MAINLY JUST WANT TO GET RID OF THE REV LIMITER THAT IS IT

Also now I am kind of curious why it's tripping a fuse just being plugged in. I bet one of the power and ground wires need to be switched over

Mudflap · 03-26-2024, 06:31 AM

Quote:

Originally Posted by solidsnake2431

Yes I have used them before with luck. What do you mean by unusable? How did you know they were unusable? I know a lot have too much advance on start up

MAINLY JUST WANT TO GET RID OF THE REV LIMITER THAT IS IT

Also now I am kind of curious why it's tripping a fuse just being plugged in. I bet one of the power and ground wires need to be switched over

Unusable because the idle has to be set above 2500 to keep it running, it kicks back while starting, runs poorly even at high RPMs.

Thumper · 03-26-2024, 09:22 AM

I found an adjustable CDI unit that worked for me, and posted it in the Templar Resource guide sticky (post #9). It includes a video. Here it is:

https://www.chinariders.net/showpost...35&postcount=9

I have the AC CDI in my 5 speed Templar X (first gen), but my 6 speed had a DC CDI. Testing to figure out which you have is described in this post.

Advance keys are FIXED, and advance at idle (kick back). But my AC CDI has no advance at idle. It starts easy. I think most electronic CDI units do this. Advance is based on frequency of trigger (rpm), so it can be advanced on a curve based on rpm.

I imagine that you got the right kind (DC), but you can verify that the (original) CDI is getting 12V when you turn on the ignition. This probably doesn't explain the shorting out though. Maybe you got a faulty unit. Can you use a multimeter (ohmeter mode) to check which wires connect to the housing (grounded)??

03-23-2024, 09:03 PM	#1
solidsnake2431 Join Date: Dec 2023 Posts: 31	Aftermarket CDI for Templar 250 fail. Help..? So.. I bought an aftermarket CDI to disable the rev limiter and also increase the ignition timming. I bought the correct one for DC but somehow when I plugged it in and went to turn on the bike there was no power to anything so I found it popped the thin red wire fuse by the battery!! The crazy part is that it popped the fuse even though the bike ignition and everything was switched off! This does not make any sense. Apparently one of the CDI wires in the harness must cross a power wire with a ground. If I can find what one I can probably rewire or disconnect the wire that is causing the problem. I know it's a longshot but anyone have any ideas on what wire could be causing the problem and how to fix it? Attached Thumbnails
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03-24-2024, 06:45 AM	#3
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,533	Put the stock cdi back in and send back the new cdi. I never had any luck with them. I was sent the wrong type cdi several times before I received the correct one only to find out the bike ran better with stock. __________________ 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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03-26-2024, 09:22 AM	#7
Thumper Join Date: Feb 2021 Location: Kansas City Posts: 2,194	I found an adjustable CDI unit that worked for me, and posted it in the Templar Resource guide sticky (post #9). It includes a video. Here it is: https://www.chinariders.net/showpost...35&postcount=9 I have the AC CDI in my 5 speed Templar X (first gen), but my 6 speed had a DC CDI. Testing to figure out which you have is described in this post. Advance keys are FIXED, and advance at idle (kick back). But my AC CDI has no advance at idle. It starts easy. I think most electronic CDI units do this. Advance is based on frequency of trigger (rpm), so it can be advanced on a curve based on rpm. I imagine that you got the right kind (DC), but you can verify that the (original) CDI is getting 12V when you turn on the ignition. This probably doesn't explain the shorting out though. Maybe you got a faulty unit. Can you use a multimeter (ohmeter mode) to check which wires connect to the housing (grounded)?? __________________ -2022 5 speed Templar X Orange, OEM 51T rear sprocket, 14T front sprocket -NOS 2020 KTM 250SX (2-stroke motocross), less than 10 hours on it
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03-23-2024, 09:06 PM	#2
solidsnake2431 Join Date: Dec 2023 Posts: 31	All the wire colors match up except for like 2 on the bike are black but the CDI has a different color for both. I guess that is where the issue is but how do I fix it?
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03-24-2024, 10:34 AM	#4
Mudflap Join Date: Sep 2014 Posts: 1,870	I agree with Jerryhawk, the stock CDI is best. The aftermarket "performance" units I've tested had too much advance to the point they were unusable.
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