View Full Version : Wiring Diagram 2 wire Alternator
lcjohnny
07-11-2007, 04:37 PM
All
I bought the uprated Regulator/rectifier box as the old one was boiling hte battery. Trouble is that the wires are a different colour to the original and the connectors are different.
My bike is a 1997 M900 so the wiring was originally correct for that model.
Has anyone got the wiring diagram for the latest regulator/rectifier??
Jon G
Scotty
07-11-2007, 04:48 PM
whats the model number ?
the most recent one i bought came with a handy diagram
red to the +ve battery
black (or green ?) to the -ve battery
yellow(s) to the alternator
'other' (white) to the charging light
Scotty
07-11-2007, 04:59 PM
you have how may wires from the alternator ? 2 or 3 ?
lcjohnny
07-11-2007, 08:06 PM
The alternator is a 2 wire one (2 yellow wires)
The old reg/rec has 2 yellow wires, a double red-wire, a white and a black wire these connect as follows
Reg rec side-to--bike side
2 yellow------to--2 yellow
double red---to--single red
black----------to--red with black line
white----------to--red with white line
The new reg rec has
2 yellow (I can guess what they do!)
2 red
2 green
Any help
gratefully accepted
Jon
Scotty
07-11-2007, 08:37 PM
id stick the
two red to +ve battery
two green to -ve Battery
and cross your fingers ;)
on the old set-up id guess at the single red and the red with black line being a longer way back to the battery errm perhaps with a fuse in there
and you wont get a battery light on the dash for the battery being dead any more :(
sounds like you have a slightly different reg/rec to the one I've recently got for me 92 750 SS again a 2 yellow wire version i got that from electrex world (via a main dealer) and that's a RR51
lcjohnny
08-11-2007, 07:21 PM
Scotty
I think you have hit the nail on the head it is the 2 non-red-or-yellow wires which are the problem.:dunce:
The original Reg Rec uses the frame as earth the othter wires are
1) a feed from the battery to give charge control
2) the feed from the voltage regulator light -
so they can't be wired to earth - that would be a radical change for a replacement part.
The risk of total burn out of battery ,loom & reg rec seem very high here.:on: :on: :on: :on: :on: ,.
was yours a 2 wire alternator pre 98 monnie?
Jon
Scotty
08-11-2007, 07:35 PM
mine was a 2 wire alternator from/for a 90 - 9X SS so yeah the old type
Scotty
08-11-2007, 07:39 PM
yeah i have an old two wire alternator from a 92 SS
from
http://www.electrexworld.co.uk/
the RR51 replacement , its ace as it works and everything
Stafford
09-11-2007, 03:09 PM
Manual any good?
https://mail.theraileng.co.uk/ducati/
lcjohnny
10-11-2007, 10:15 AM
Stafford
thanks but I already had that manual - difference is I paid for it. :chuckle:
As far as I can tell the 1997 Monnie was the last one with a 2 wire alternator [anyone know better?] and my 97 manual shows the bike's wiring to be standard; with the 2 red wires with stripes as above. On the Electrex site their M900 reg/rec replacement is shown with the correct wiring unlike my new one.
The new Reg-Rec I have is a Shindengen SH673-12 which is in a Ducati box marked as M900 and 2 web-shops are selling them as M90 replacements. It may have been fitted to French Elefants?
So I cannot prove it is wrong but it doesn't fit at all :worried: so I am going to go back to Riders and try to get my money back.
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