[6pack] Alternators and sensing wire (or lack of)

[Scott Tilton]

Hey Stan,

I've got that alternator on my 1970 TR6.
I did the conversion a long time ago though and have forgotten many of the
details.

It might help me a little bit if you could post web addresses to the sites
that you found and used as reference for the conversion.
That might spur some memories. . .
I'd also be happy to go take a few snap shots of what mine looks like if it
helps any.

I seem to recall, however, that I ran a couple of new heavy gage wires from
the alternator rather than use the one in my original harness.
That old harness has enough issues without my trying to pump 50+Amps through
it.

Sorry I'm not more help at this momemt.
Post those website addresses and we'll see what we can do to help.


Scott Tilton
Alexandria, VA
On Mon, Jun 9, 2008 at 6:01 PM, Foster, Stan <stan.foster at hp.com> wrote:

> I recently fitted  (but have not yet tested) a Bosch 55A alternator, ex
> Ford
> fiesta (it is a new unit). I researched this project and visited several
> web
> sites that describe this conversion and found that these alternators seem
> to
> differ and the suggested installations differ. One of those differences is
> with the connections. The Bosch alternator is plug compatible with the
> two-wire modular connector on the Lucas alternator. Depending on the web
> site
> you either insulate and tuck away the unconnected brown "sensing wire" or
> you
> plug it into an appropriate connector on the Bosch unit, just north of the
> modular connector.
>
> The unit I purchased from Autozone looks the same as the other 55A Bosch
> alternators illustrated on the various TR6 project sites except that on the
> back of the alternator there is a small black component (maybe 1.5 inch
> long,
> 1 inch high, .5 inch deep) that component has one wire and it is plugged
> into
> the spade terminal that other sites show as the spot for the sensing wire.
> So
> now I'm wondering:
>
> What the heck is a sensing wire anyway ?
> What happens if I don't connect it ?
> What is the black thing on the back of my alternator that is plugged into
> the
> sensing wire terminal ?
>
> Stan
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-- 
Signature below blatantly stolen from Bud Rolofson:

70TR6 CC5#### (Good 6)
63TR4 CT157## (The Wreck-Almost Parts)
64TR4 CT25### (The Project)
97F-150 L TRUCKO (Triumph Support Vehicle)
1989 Honda Prelude Si 4WS (economic commuter Vehicle)