Hi there.

Hopfully some can help me out with this or show me the right path.

I have an 07 Night Train and recently have been experiencing (while riding) the engine/code light coming on as well as the battery warning light.

The battery is about a year old. I have taken it into a battery shop and had it tested. 3 differnt tests done on it... all fine in perfect condition.

After a Full overnight charge

I tested the voltage.

Bike cold.... 12.35

Bike idling.... 13.85

Under load..... blinker on / Brake light on / high beam on.......  about 12.60

this is where it gets funny......

After load test ........ and back to idling.......17.25 - 18.50 V ????????

Is this Normal ????

What is my next step?

Bike starts and runs fine every time.

Hope someone can help,

 

Thanks guys

 

 

 

Hmmm, you do have a problem.  I suggest you see if there are any fault codes logged in the CPU.

I'm thinking it may be a voltage regulator problem.  The voltage should be between 14.3 & 14.7v @ 3600rpm @ 24 degrees C.

Any voltage above this is certainly going to fry your battery really quick!

Good Luck

 

Pete

Yep reg but do a intro or you will get a lashing

Not normal, regulator is faulty,

if it'e charging 17.25 to 18.5 volts at idle, what.s it letting through at higher revs ?