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12V conversion on 50 Merc. Overdrive help

Discussion in 'The Hokey Ass Message Board' started by TheMerc, Apr 9, 2012.

  1. So I am in the process of getting the Merc ready for the first show, we are doing a 12V conversion as I'm just tired of dealing with positive ground and rebuilding generators! I went with a new 12V alternator that resembles the original generator. I recently acquired a 12V overdrive solenoid from a 1955 Studebaker, and now am looking at replacing the overdrive relay.
    I have found one still in the box and was just wondering if anyone knew if it would work for me.
    1955-1956 Chevrolet Pass. Transmission Overdrive Relay 12 Volt 1116903 MISB

    Does anyone know if this will be an easy replacement for me or should I just use the original and use a voltage reducer?

    Thanks in advance-
    (RodTossers, IA)
    Last edited: Apr 9, 2012
  2. Buford
    Joined: Aug 30, 2001
    Posts: 314


    I would go with the 12 volt should work great. It's not that complicated; it works with the governor to bring the trans out of overdrive when vehicle speed drops to approximately 25 mph. Happy motoring, Frank
  3. 194950ply
    Joined: May 11, 2011
    Posts: 3


    Another setup on electrical wiring using bosch type and a vw headlight latching relay. Have tried to post this several times for other post about a r-10 overdrive. Mines a chrysler type in my 50 4dr. but all brands are pretty much wired the same. Love it!

    Attached Files:

  4. Greaser Bob
    Joined: Mar 5, 2006
    Posts: 1,325

    Greaser Bob

    Merc-it's me Greasy! Bout time you got on here-do an intro and post pic's of your sled-the folks will love ya for it!!

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