2003 EHC QUESTION

A DevilDog

Member
If you don't disconnect the positive side of the battery and your messing with the ground to the bike and ehc could that short out the ehc?
 

Mikeinjersey

Well-Known Member
Not sure what you mean by messing with the ground but if the negative side of the battery ( ground ) is still connected to the battery and your playing with any component and cause it to arc the answer is possibly . When working on an electrical component ie. cleaning or replacing always remove the ground from the battery. If it's not connected there is no way the positive side of the Battery can cause an arc. and cause possible damage to you or the component.
 

Sven

Well-Known Member
No. It's like turning the key on and off. So think: ground to ground, all day long.
Yes. If you touch ground cable to the (+) wire going to the ehc, it's like tapping the (+) side of the battery. Once and you're done.

I've read something that might be just one of those numbers like saying a 60hz cycle is something in nature. Speed of light is so many mph in nature. So this arc is a measured number when the bright ones calc is this constant. I've seen it pop up another time, so for WATT it's worth; key off at the break goes 0.7v. Break at the ground to cable, the same 0.7v spike.
 

A DevilDog

Member
Not sure what you mean by messing with the ground but if the negative side of the battery ( ground ) is still connected to the battery and your playing with any component and cause it to arc the answer is possibly . When working on an electrical component ie. cleaning or replacing always remove the ground from the battery. If it's not connected there is no way the positive side of the Battery can cause an arc. and cause possible damage to you or the component.
The bike ground eye broke while riding. The ehc lights ground is in the same spot too. So, the ground was disconnecting and shutting the bike off in mid ride. Then we would come to a stop but could start it up and take off then rinse lather repeat. We found out that the eye to the ground cable on the bike broke in half and was not on all the way cause it to shut down. I am wondering if that and us trying to reconnect both the bike ground and ehc lights ground would cause it to short the ehc out on the lights. Because now my blinkers and brake lights do not work but everything else does.
 

Jersey Big Mike

100K mile club
The bike ground eye broke while riding. The ehc lights ground is in the same spot too. So, the ground was disconnecting and shutting the bike off in mid ride. Then we would come to a stop but could start it up and take off then rinse lather repeat. We found out that the eye to the ground cable on the bike broke in half and was not on all the way cause it to shut down. I am wondering if that and us trying to reconnect both the bike ground and ehc lights ground would cause it to short the ehc out on the lights. Because now my blinkers and brake lights do not work but everything else does.
An intermittent power connection to the EHC/TACH will create failures.
I lost my tach annunciator(burnt to a crisp) once due to a bad ground connection, luckily not the EHC.
 

Mikeinjersey

Well-Known Member
I am totally guessing at this point but I would recheck your new ground connection and make sure it's good. If no luck, I would disconnect the battery - side first then the + side. Then reseat the connector on top of the EHC. Clean it and apply fresh dielectric grease. Put it back together and reconnect the battery + side first then ground side . If that doesn't help and no one else has any ideas from there experience with these bikes I would take Mr Wrights suggestion and call Curtis .
Not for anything but I wonder if your emergency flashers work?
 

A DevilDog

Member
I am totally guessing at this point but I would recheck your new ground connection and make sure it's good. If no luck, I would disconnect the battery - side first then the + side. Then reseat the connector on top of the EHC. Clean it and apply fresh dielectric grease. Put it back together and reconnect the battery + side first then ground side . If that doesn't help and no one else has any ideas from there experience with these bikes I would take Mr Wrights suggestion and call Curtis .
Not for anything but I wonder if your emergency flashers work?
No emergencies either
 

Mikeinjersey

Well-Known Member
Try what I suggested with the connector on top of the EHC before you give up. Can't hurt. There is a RESET procedure for EFI bikes
PROCEDURE:

1. Turn on KEY
2. Press the RUN button
3. Turn OFF key and let bike sit for a minimum of 15 seconds before turning ON the key again.

I copied this from a different thread from BigDogBro1 . Hey it's a shot in the dark but doesn't cost anything.
 

Mr. Wright

Knows some things
Supporting Member
He has and 03 Chopper, it is a completely different animal and has a completely different EHC than any of these other bikes.
 
Top