Easy ground mod that helped *pics* - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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Where does this wire go?
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post #1 of 5 (permalink) Old 08-29-2010, 04:50 PM Thread Starter
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Thumbs up Easy ground mod that helped *pics*

So a friend stopped by for a visit, eventually we talked bike mods. I told him of the problems some VN riders have with our charging, starting, R/R and stators.

His brother is a fleet mech in Seattle that cares for more than 1k vehicles. They discovered ECU failures were rising; the problem was traced to poor grounds. Their solution was to run a dedicated ground wire from the battery to the ECU to the alternator.

My R/R was running quite warm, so I decided to give this a try (the existing grounds were already cleaned prior to this). The results were very promising...
Steady reading on the volt meter of 14.5v and easier starts.

engine ground to reed valve cover. I used this spot for simplicity/testing.


Double soldered ground wire to battery ground. Leads go to above engine ground and R/R body.


Ground wire attached to top bolt on R/R


DT

95 VN750 (eBay)31k+
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post #2 of 5 (permalink) Old 08-29-2010, 05:26 PM
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Following a suggestion I read on Gypsy's site, I too grounded the R/R. But there will be several folks on shortly to explain that the R/R is already grounded through the existing wiring. Oh Well....

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
_____________________________________________
"Black Beauty"
1989 VN750 acquired December, 2008, 6,711 miles
Currently 23,298 miles

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2001 Honda CMX250 Rebel acquired July, 2008

1987 VN750 project bike, acquired August, 2009, 33,000 miles and balancer sticking out of the case, currently awaiting attention and parts
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post #3 of 5 (permalink) Old 08-29-2010, 05:41 PM
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I have taken apart the R/R in hopes of finding a way to replace the zenner diodes.. upon inspection there is no ground to the case of the R/R... the black/yellow wire (middle pin) is the only ground available for the r/r.. and guess what.. it runs directly to the battery main negative post.
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post #4 of 5 (permalink) Old 08-29-2010, 05:56 PM Thread Starter
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Quote:
Originally Posted by slimvulcanrider View Post
the black/yellow wire (middle pin) is the only ground available for the r/r.. and guess what.. it runs directly to the battery main negative post.
So the guy I was talking with had the right idea... I think I'll trace down the wire you speak of and make sure it's in good condition.

Thanks Slim

DT

95 VN750 (eBay)31k+
GL1100 front fender
OEM engine guard
OEM high back rest
'V-Twin' HWY pegs
Black 750 Spectre handlebars
SunPro Volt Meter (Amazon)
Maier bug shield (JCW)
Bar Ends anti-vibe (JCW)
Emgo air filters
Tank bag-Eclipse
Tail bag-FroZone Cooler
Back Rest-Igloo 6 pak cooler
WalMart Saddle Bags
R/R Relocate
Dry Splines Lubed
AGM DieHard-Sears
Gutted Goat
Sporster XL Mufflers
LED's-stop,tail,turn,marker
Pickup coil mod to .45mm
Silverstar headlight
Rotella T6
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post #5 of 5 (permalink) Old 08-29-2010, 07:15 PM
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Tracing said wire is easy. take off the seat, look at the battery main ground wire to frame connection. there is a wire with a bullet connector. this wire goes strait to the r/r..
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