Make sure the battery 12V is NOT connecter to the circuit, i.e. the masthead
light switch is not on. You can fry your meter otherwise or at least get
incorrect result.
Leslie
________________________________
From: Dennis C. <capt...@yahoo.com>
To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com>
Sent: Wednesday, May 15, 2013 7:56 AM
Subject: Re: Stus-List Electrical Advice?
Set your meter to read resistance (ohms)
Touch the red and black probes together to test the meter. You should see 0
ohms when touching and OL (out of limits) when not touching
Attach the common (black) probe to a ground wire (black or yellow) at the mast
base junction
Touch the meter's red probe to the positive wires at the junction
Readings
Out of limits - open circuit, i.e. burned out bulb or bulb not making good
contact in socket
Some ohm reading - resistance shows good bulb
0 ohms - shorted circuit
Dennis C.
>________________________________
> From: Robert Abbott <robertabb...@eastlink.ca>
>To: cnc-list@cnc-list.com
>Sent: Wednesday, May 15, 2013 9:38 AM
>Subject: Stus-List Electrical Advice?
>
>
>After steeping the mast, I hooked up the various
lights (running, bow,
>foredeck). Mast head light did not come on....my guess is a blown
>bulb or the bulb connection could be bad.
>
>I am no electrician but I do have a digital multimeter. Is there a
>'test' with the multimeter that can suggest that it is a blown bulb or a
>bad bulb connection?
>
>A simple 'yes' answer will not suffice.....step by step explanation
>would be helpful.
>
>I ask this because getting the the top of my mast is a 3 person
>task....one to up, one to grind and one to tail. If I know it is the
>bulb, I can plan for a fix accordingly.
>
>Bob Abbott
>AZURA
>C&C 32 - 84
>Halifax, N.S.
>
>
>
>
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>CnC-List@cnc-list.com
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>
>
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