06 K9 randomly won't start

tcrowelljr

Member
A friend has a 2006 K9 that will sometimes start and other times it doesnt quite power up. I stopped by today and it turned on, started and ran just fine. We turned it off and then tried to restart and only the right turn signal would flash. Turning on the ignition key on and off the heaadlight would flash. He put. a new battery in it today and hasn't ridden it in a couple years. The EHC does light up when it does'nt power up. I have attached a picture with the lights. I don't remember what the lights mean. Can anyone help?IMG_5777.jpeg
 

Mickmorris

Well-Known Member
Supporting Member
Well I don’t know about his stuff but my ridgeback started out EXACTLY like that when the EHC took a dump. Ran fine one day. Next wouldn’t start & headlight was flashing on & off…. Then wouldn’t start at all but the headlight still flashed that was it. The EHC was 20 years old so I thought it did a great job. I replaced it with a AXLE EHC from Wildsteedworx and the bike is running fine. I think Curtis can test the EHC if you send it to him.
 

Mickmorris

Well-Known Member
Supporting Member
No power to anything other than right turn signal. Speedo doesn't light up. I'm thinking it could be the keyswitch, but the EHC is lighting up. Mostly red lights though. I am not familiar with the 07 EHC, I have an 04 RIP on my chopper.
Well I am pretty sure the lights are fault lights. Indicating fault's in the system. That picture is not really clear at showing which but it looks like they are all lit…
 

Mikeinjersey

Well-Known Member
No power to anything other than right turn signal. Speedo doesn't light up. I'm thinking it could be the keyswitch, but the EHC is lighting up. Mostly red lights though. I am not familiar with the 07 EHC, I have an 04 RIP on my chopper.
Read this file and it will help you understand the EHC. Connections Positive and Ground are very important. Remember if you disconnect the battery always disconnect the - Negative (ground) side first then the Positive side. When reconnecting do it in reverse, Positive side first and lastly the Negative (ground) side.

 

tcrowelljr

Member
Have you double checked the voltageon the new battery? New doesn't mean good.
Should be 12.8v for a fully charge battery.
Also try disconnecting the positive and waiting a few minutes then reconnecting it (it will reset the ehc just in case he sent it into a odd state while changing the battery.
The battery was 12.8v, but I will have them remove the positive for a few minutes.
 

tcrowelljr

Member
Read this file and it will help you understand the EHC. Connections Positive and Ground are very important. Remember if you disconnect the battery always disconnect the - Negative (ground) side first then the Positive side. When reconnecting do it in reverse, Positive side first and lastly the Negative (ground) side.

Thank you for the Electrical, that helps.
 

Sven

Well-Known Member
May not apply... clean grounds by scraping contact facings with new bare metal. Say you didn't... then take a pair of jumper cables, ground one to the battery's negative side, the other 3 to frame and engine. See if this helps.

Had no spark on a late model 750 Honda. Pulled a diode or something off, dipped the harness connector in vinegar to clean away 55yrs of electrolysis buildup at the prongs. Lit right off. Had a motorhome not start. Changed the solenoid but noticed an arc at the ground strap from chassis to engine. Scraped it off with fresh metal contact faces and lit right up.

You have 18yrs of buildup at those [ground] contact points.
 

Mickmorris

Well-Known Member
Supporting Member
Brand new battery and it did start a few times. It went from no power other than turn signal to running and back to no power with turn signal. There is a by-pass to the starter and it will crank when that is enabled.
By bypass you mean slam button? And you said it cranks but does it start? Are all the lights back on on the EHC after doing the reset by disconnecting the battery? And what is the headlight doing? Does it come on when you turn the key on?
 
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Mikeinjersey

Well-Known Member
Brand new battery and it did start a few times. It went from no power other than turn signal to running and back to no power with turn signal. There is a by-pass to the starter and it will crank when that is enabled.
The battery reset is for fuel injection bikes. I don't think it has anything to do with your issue. It is important to answer Micks questions so we can begin to help you isolate your problem. Make sure your new battery is fully charged because you've been cranking on it and maybe it's lost it's punch. First step after you know the battery is up to par 12.8 vdc is to turn the key on and you should have a Headlight lit, Front running lights lit, tail lights, speedometer, tachometer and tag light. Also at this time look for fault lights on the EHC. As JBM pointed out you could have a short up in your Handlebar PCB screwing with the EHC. You will not see a light on your ignition yet until you select run.
Before you try to start select the rt and left turn signal at the same time and see if you get emergency flashers. If all looks good select run then start and see what happens. If you get it to start check to see you are charging by getting approx 14 vdc on the battery while running. If at this point you are running but still have an intermittent failure make sure your ground at the starter is good.
The fact that you have a starter by-pass installed probably means that the previous owner was having problems with the Start Circuit and installed it as a backup.
 
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