Any chance their might be something inducing voltage into the harness.

As in a plug wire tie wrapped to a part of wiring. I figure you know better 98 hotrod.

Saw that problem in a few Caddys back in the day

Best of Luck Sir

 

No, no scope.. Also there is no regular repetition.. RPM's make no difference idle/cruise.. It still happens..

 

I guess at this point anything's possible.. I know the wires aren't that new so maybe I'll go that route...

 

So you haven't tried a 3rd regulator?

Maybe pull all the fuses except the ones needed to run the bike and see if the issue still occurs. Use external solenoid button.

You are using a voltmeter with min/max measurements. Which one? Model #? Try a different one.. If the measurement wires are long, twist them together.

 

You said you did a Sportster module but made no mention of the coil other than the guy had some dual fires. Did you put on a dual fire with the Sportster module?

And you've not said what brand the two regs were and whether the one off the shelf that you've tried was new

 

I can send a new ultama k modual to try its no biggy

 

No have not tried a third regulator.. First one was a cycle electric and the second one was new but a cheap knock off..

I will try eliminating circuits to see if it makes any difference..

Fluke 73.. as random as it is I did not see it on the Fluke..


Yes new Dual fire with the Sportster module.. Still had the same issue..

I'll take a look at the plug wires.. At this point I Guess anything is possible.. I just might order a new regulator but not sure it'll fix it..
The worst part of all of this is I lost my job from Brookhaven National lab again.. This is the second time they terminated me.. The place is ruthless..
I was looking at properties in North Carolina for retirement.. I Guess that's not happening any time soon..

 

Thanks John, I appreciate the offer.. Does it have voltage spike protection? Or is there a way to protect it?

 

Then what did you see the overvoltage on?

 

I saw it on the display of my dakota digital speedometer.. It has many functions and when I see the high voltage there is a battery icon that also flashes.. It's pretty quick so I'm surprised that I can see it on a digital gauge.. Don't have an analog anymore..