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  1. 11-29-2019 04:43 PM #1
    divert00
    divert00 is offline Senior Member
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    AC Panel Illumination Bulbs CM1828

    1986 63 MY. All 8 of the panel illumination bullbs on my AC panel are burned out (that way when bought).
    Bulb is CM1828. Stamped on casing is 37.5v, 50 milli-amps. Multimeter reading at each bulb socket is
    74v. I find it unusual for all 8 bulbs to be burned out. Wondering if the culprit is the 74v.

    Anyone have any idea of what the voltage should be (assume 37.5) and how it gets stepped down to
    to that voltage in a 120/240 panel?

    John McCarley
    Water Colors
    Wrightsville Beach NC
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  2. 11-29-2019 05:47 PM #2
    Photolomy
    Photolomy is offline Senior Member
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    Re: AC Panel Illumination Bulbs CM1828

    Per chance the PO put the wrong bulbs in the AC panel? Those are used in many places, such as holding tank 3/4 full indicators, but off the battery (32V), not AC. Maybe the PO thought they went there as well?
    Prometheus
    1978 53' MY Hull #529
    Viera, FL
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  3. 11-29-2019 06:12 PM #3
    Glory
    Glory is offline Senior Member
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    Re: AC Panel Illumination Bulbs CM1828

    I replaced mine. Sam's had them.
    GLORY Hull # 365
    Northport, NY
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  4. 11-29-2019 09:47 PM #4
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    SEVEN
    SEVEN is online now Senior Member
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    Re: AC Panel Illumination Bulbs CM1828

    Call Sams on Monday. Ask Steve which bulbs you need just in case the PO put the wrong ones in there.
    SEVEN
    1979 53' MY Hull #563
    Antioch, California
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  5. 11-29-2019 10:39 PM #5
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    SKYCHENEY
    SKYCHENEY is offline Senior Member
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    Re: AC Panel Illumination Bulbs CM1828

    I second (third or whatever) that. Call Sams.
    Sky Cheney
    1985 53EDMY, Hull #CN759, "Rebecca"
    ELYC on White Lake--Montague, MI
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  6. 11-30-2019 09:37 AM #6
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    rsmith
    rsmith is offline Senior Member
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    Re: AC Panel Illumination Bulbs CM1828

    Nobody questioned the 74v reading?
    "DON'T BELIEVE ANYTHING YOU READ OR HEAR AND ONLY HALF OF WHAT YOU SEE" - BEN FRANKLIN




    Endless Summer
    1967 50c 12/71n DDA 525hp
    ex Miss Betsy
    owners:
    Howard P. Miller 1967-1974
    Richard F Hull 1974-1976
    Robert J. & R.Scott Smith 1976-present
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