VFRness, electrical problem, need some help

Just finished some diagnostic work and need a review of what I did and some guidance please. I reviewed a ton of posts and think I know what to do just need some guidance.

99 VFR 800 I bought last year. Did the R/R retrofit (31600-MBG-305) and put in a new Yuasa battery right away. Didn't have any problems just wanted to get it right so I didn't have any problems.

Didn't until yesterday! Lights on, dash lights on, turned over slowly. Last time I rode it, it was perfect but it sat for two weeks. Immediately became concerned given the new battery and new R/R. Put it on the tender overnight.

Green light on on the tender this morning.

Came home from work, ran the following diagnostics per the Honda manual.

Current draw test (battery - terminal to - battery cable, disconnected, .92 ohms = normal
Battery voltage = 13.0V
Voltage across battery at idle = 13.12V
Voltage at 5,000 rpm = 12.74V
Not good!!

Disconnect R/R.

Harness side
Red/white on the harness side to ground = 13.0V
Ground, green wire to engine ground = 1.2 ohms
Yellow wires to each other, no higher than 0.8 ohms. The probes on my multimeter were a little tricky to get stable in this connector.

All of this points to R/R, right?

No visible wire damage or dirty connectors. The bike is clean.

What is the probability that this is another R/R especially a supposedly good one?

My questions:

1) No reason to suspect the stator, right?
2) Any other wires to chase etc.?
3) Sounds like a VFRness and a new R/R?
4) For a 99, there are two VFRness and a VFRness bundle. Not sure which one is the right one based on the descriptions provided.

Thanks so much!

 

Tested R/R according to electrosport.com flow chart. Checks out fine.

So, what gives?

 

You could have a bad battery, I've had them go out after less than a year.

My recommendation, what I did on my '99, is run some larger wires, 12-14 gauge, in parallel between the R/R red wire output (2 wires, tie them together) and the battery (+), with an inline 20 or 30 amp fuse. You can also run a parallel wire from the R/R (-) to the battery (-). I haven't had a problem in the few years since I made this mod. I haven't looked at the VFRness premade wiring kit but I think it accomplishes the same thing.

Before this I had batteries dying, especially in the winter after sitting for a little while. Two winters now and I'm still on the same battery. Try the wiring fix and rerun the Electrosport flow chart to see if the high rpm voltage is good.

 

Sounds like the same problem my buddy had with his '99. Check out my post (link) about our adventure with it.

A VFRness would be a smart place to start. Probably best to ignore what the Honda manual is telling you as it's pretty useless in this regard.

Like the other poster suggested, a good, large wire directly from the RR (+) output to the battery would probably fix it, but it's going to be a heckuvalot cleaner of a repair if you do it with a VFRness.

I don't know the real difference between the VFRness and the VFRness bundle, but if it were me, I'd get the bundle because it's not that much more dough. Or drop the VFRness guys a note and ask them the difference.

Good luck!