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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