[Rhodes22-list] steaming light fun .... mystery partially solved ... curiouser & curiouser

[Hank]

Pull the bulb out and use your multimeter to check for power in the light
socket.

Hank

On Wed, May 13, 2009 at 10:38 AM, Mike Cheung <mikecheung at att.net> wrote:

>
> Lowered the mast, both bulbs in the masthead are fine.  They're wired
> together at the bottom and there is power there.  I'm confused.  Gonna pull
> the masthead light assembly and see if something has come loose there.
>  Mike
>
>
>
> Mike Cheung wrote:
> >
> > Aha .... pulled the cable end of the connector apart at the base of the
> > mast and found that the two bulbs at the top of the mast share the same
> > connection.  They are wired separately, but are stuffed into the same pin
> > on the connector.  So, Muireann cannot show the forward masthead light
> > separately from the aft masthead light.  May need to rewire that in the
> > future.  The upshot is that it pretty much has be to a problem at the
> > masthead for the forward light, either the bulb or a crappy connection.
> > Next step is to drop the mast and get to the masthead fixture for a look
> > see.
> >
> > Still planning on a Chesapeake run this Friday through next Wednesday.
> > The weather for the early part is not encouraging, but looks better from
> > Monday on.
> >
> > Sketchy plans still:
> >
> > Friday, launch in or near the Magothy, overnight nearby; probably on the
> > hook
> > Saturday, Annapolis for the afternoon, dinner and overnight; probably on
> a
> > mooring if we can get one
> > Sunday through Tuesday .... cruise the Chesapeake roughly between Rock
> > Hall (to the North) and the Choptank (to the South); we'd like to hit
> Rock
> > Hall, St Michaels, and maybe Kent Narrows enroute between them, but the
> > wind and weather will have a lot of say in when we end up where.
> > Wednesday, back to our launch point, haul out, and head back to Ohio.
> >
> > Will firm things up a bit if I can after looking over the cruising guides
> > piled on my work table and maybe connect with some of you Chesapeake
> > Rhodies (Mary Lou and the Crab Alley Rhodie esp.) if things work out.
> >
> > For the Chesapeake Rhodies ... a question or two .... It sure looks like
> > in most places in the cruising range we're planning to use that we should
> > be able to cross the Chesapeake in about an hour or two.  Is that pretty
> > much your experience?  It also looks like St Michaels to Rock Hall (or
> > vice versa) should be easily done in a day of sailing.  Is that
> > reasonable?
> >
> > We'll probably dry provision Muireann and plan to take dinners ashore
> most
> > nights.  It's our first long cruise and I don't want it to be too much
> > like camping for my Admiral.  I'm thinking that of the five nights we
> > won't spend more than two on the hook, but since I'm not making marina
> > reservations, that could be an underestimate.
> >
> > Muireann is sporting her new sails so she'll be a red hulled R22 with
> > black Sunbrella on the sails.  She's got her hull number (113) on her
> > genoa.
> >
> > Mike Cheung
> > s/v Muireann
> >
> >
> >
> > Mike Cheung wrote:
> >>
> >> I'm troubleshooting a recalcitrant steaming/anchor light and am slightly
> >> perplexed.  The forward masthead/anchor light, which is also the
> steaming
> >> or running light, has not been lighting so far this season.  I finally
> >> carried a multimeter up to Muireann and checked things out more
> >> quantitatively.  As you know there are four pins on the mast wiring
> >> harness for lights.  The one at 10 o'clock appears to be the ground.
>  The
> >> next one clockwise at 2 o'clock or so appears to be the aft anchor light
> >> and is working when the anchor light switch is on.  One would expect
> that
> >> another pin would also be energized then for the front anchor light /
> >> steaming light, but it is not.  Okay, maybe that's the problem because
> >> the front light is not lit when running light is selected either.  But,
> a
> >> check of continuity shows continuity only between the ground pin and the
> >> aft anchor light pin.  This implies that both the foward anchor light /
> >> steaming light bulb is out (hence not continuity) and that there is a
> >> problem getting power to whatever pin it is connected to on the four pin
> >> harness.  Since the probability of this is the product of the individual
> >> failure probabilities, I'm suspicious.  Anything I"m missing here?
> >>
> >
> >
>
> --
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>
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