There is no thin brown wire *from* the ignition switch to the solenoid, but
there is a brown wire from the solenoid *to* the switch. That wire (and any
other brown wire in that vicinity) should be connected to the same point as
the thick battery cable. Having said that the original configuration is
that the brown wires on the solenoid were bolted to the big stud and had
bolt-tags to suit. It is quite possible that modern vehicles have the brown
wires connected to spade terminals which are *electrically* the same
connection as the heavy battery cable, not having any modern vehicles I
wouldn't know, but in any case if your brown wires have bolt-tags than it is
obviously easier to connect them to the same place as the heavy battery
cable.
A 72 should indeed have a white/brown from the stater relay and this should
go to the 'operate' terminal of the solenoid. Cars earlier than 1970 may
have a white/red direct from the ignition switch to operate the starter.
Cars of 75 and later also need a white/light-green connected to the solenoid
to provide boost voltage to the 6v coil during cranking, and on factory
starters this is usually from a smaller spade than the solenoid operate
spade.
To summarise, any brown wire at the solenoid should be electrically
connected to the heavy battery cable. Remove both brown and brown/white
wires from the solenoid, connect the battery, and assuming the starter now
isn't churning connect each wire in turn to see which one does cause the
solenoid to operate and the starter to churn.
PaulH.
----- Original Message -----
From: Andrew D. Zimmerman <a.d.zimmerman@worldnet.att.net>
Cc: Barrie Robinson <barrier@bconnex.net>; <mgb-v8@autox.team.net>;
<mgs@autox.team.net>
Sent: Friday, June 23, 2000 5:54 AM
Subject: Gear Reduction starters: Help!?
> This is a multi-part message in MIME format.
> --------------F2E589CE68B5A42602C5683C
>
> To All:
>
> Barrie Robinson's post gives me a helpful segue into a post I need to
make. I
> have nearly completed the restoration of my 72 B. I had planned to to
crank it
> up last night, but upon connecting the battery, I discovered a vexing
problem:
> the starter began to turn the instant the battery was hooked up. It's a
gear
> reduction type that came from Moss via my local distributor. I followed
the
> instructions to a "T," which said to hook the battery cable to the large
post,
> the thin brown wire (from the ignition switch) to a connector adjacent to
the
> large post, and the white-brown wire (from the starter relay) to the
opposite
> side of the solenoid, just below a rubber boot insulating the wire that
runs
> between the starter and the solenoid. Although it made no mention of
this, I
> also hooked up the "fat" brown wire that goes to the alternator to the
large
> post--it shows this connection in the Bentley wiring diagram for my car.
>
> Does anyone know why my starter is doing this?? Is there an error in the
> wiring instructions? Has anyone out there had a similar problem? I
appreciate
> any help anyone can offer. My next step is to try switching the thin
brown and
> white-brown wires.
>
> Andrew Zimmerman, Newark DE
>
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