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Re: Bosch Alt Wiring

To: Ian Clough <mc_ian@yahoo.com>
Subject: Re: Bosch Alt Wiring
From: Dave Massey <105671.471@compuserve.com>
Date: Sun, 3 Aug 2003 08:49:16 -0400
Cc: triumph list <triumphs@autox.team.net> 42dbca82.dsl.aros.net id h73Cp224007835
Message text written by Ian Clough
>Sadness, my Haynes manual details Engine Reassembly on
p.36 (Chap 1 devoted to engine), no mention of the
three orphaned wires going to an alternator.

So, once more if someone has a '75 TR6 and knows the
connectors schme for:

Wires:               
10g brown             
small bown+yellow   
small brown

Alt Connections:
B+, B+, D+  (+ already taken by onboard regulator)

See the MG guys page if interested:
http://members.aol.com/_ht_a/idbritcars/boschAlt.html
<

Well I did qualify it with the (I think)  but look through the owners
manual part and you will find a wiring diagram.

After looking at the link it looks like the big brown wire goes to B+, the
brown/yellow wire goes to D+.  The small brown wire does not get used since
the sensing is connected internally.  The web shows an additional wire from
the other B+ terminal to the solenoid terminal.  This is a parallel wire to
the big brown one to handle the extra current.

You can probably skip the last step and it will still work but the voltage
will be a bit less stable and will sag a bit more with increased electrical
loads.

Cheers

Dave Massey
71 TR6 (with a 25ACR on the bench destined for the 18ACR replacement)

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