New LED Lighting with dimmer issue

Discussion in 'Electrical Stuff' started by Carpediem44DB, Aug 6, 2022.

  1. Carpediem44DB

    Carpediem44DB Well-Known Member

    Aug 18, 2015
    Sanfransico Bay area
    2000 Carver 506
    2006 44 DB Sedan Bridge
    Volvo TAMD 74 P
    SO... I know its not a Sea Ray but, I replaced the cheap halogen flush lights in my Salon with some new LED light assemblies. They are solid aluminum bodies and bezel linked below. When I first put them in they worked great from full bright to off with the dimmer switch. Last night I left them on all night as night lights at the lowest position but this morning they wont turn off. They go full bright and ramp down to minimum but won't turn off. I cycled the CB to see if the dimmer needed a reset but to no avail. The dimmer is a Reddford Technologies dimmer system apparently made especially for Carver. I looked them up the other day because the system was completely inop. They were closed down in after the 08 crash when Carver went under before reorganizing. The former owner actually answered the phone and told me how they work. I simply had to cycle the CB to reset a watch dog function and they came back alive. Anyway now that they won't go off I am thinking I will need to replace the dimmer. Question is does anyone here have a recommendation for an LED dimmer system they like? I will eventully replace most of the fixtures. These light bodies however are 1/16 of an inch in diameter larger than the originals so each hole heeds to be widened by hand! Oh and there are 68 light assemblies on the 506!
    Thanks Amazon.com: ALOVECO LED RV Lights, 12V Led Lights Dimmable Camper Interior Lights 3000K Ultra-Thin RV Lights Interior Waterproof 12 Volt LED Ceiling Lights Motorhome Sailboat Yacht Case of 8 Packs : Automotive
     
  2. Shaps

    Shaps Well-Known Member GOLD Sponsor

    Nov 4, 2019
    Long Island,NY
    2010 Sundancer 500
    2015 Brig Falcon 330T
    Twin Cummins QSC550 DTS w Zeus
    SeasNT and Tripsdad like this.
  3. Tim Fila

    Tim Fila Active Member

    385
    Aug 24, 2020
    2006 52DB
    Cummins QSM 11
    On my last boat, silverton 39my, I had to leave one halogen in the circuit. If I replaced all with LEDs, it had problems.
     
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  4. ttmott

    ttmott PhD in OCD TECHNICAL Contributor GOLD Sponsor

    Apr 3, 2012
    Space Coast Florida
    2006 52 Sedan Bridge
    Cummins QSM11
    Hey Rusty - a couple of things about dimmers - for the resistive lamps like halogen the dimmers can either change the voltage or interrupt the voltage. For LED the voltage and current cannot be changed, only interrupting works. Interrupting is called Pulse Width Modulation (PWM). Your original dimmers were probably an old generation of PWM and questionable with LED technology, especially the modern constant current LED's. I have the Blue Sea Systems PWM dimmers for the bridge lighting and think they are so so; they are very coarse on dimming and brightening but they work fine. I haven't tried this yet but you might look at the IMTRA dimmer module and find switches that match your boat's switches. https://www.imtra.com/products/product-search?quicksearch=ILIM80120&productid=33204
     
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  5. Carpediem44DB

    Carpediem44DB Well-Known Member

    Aug 18, 2015
    Sanfransico Bay area
    2000 Carver 506
    2006 44 DB Sedan Bridge
    Volvo TAMD 74 P
    Thanks Tom, Looking at the wiring schematic it looks like I would need to by IMTRA power LEDs with four wires. My current lights just have to wires with all lights in parallel. Running additional wires is not an option in this life time. I may call IMTRA and see if they have an option as a direct replacement for my dimmer. As always, I appreciate the help and the technical explanation in layman's terms as to how the dimmer works.
    Cheers
    Rusty
     
  6. ttmott

    ttmott PhD in OCD TECHNICAL Contributor GOLD Sponsor

    Apr 3, 2012
    Space Coast Florida
    2006 52 Sedan Bridge
    Cummins QSM11
    I thought I understood, probably incorrectly, that the IMTRA dimmer would work with both configurations. A call to them is the right thing. The four wire BTW is for controlling red, blue, green, and white.
     
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