1954 Starter Relay 903 Hookup - NCRS Discussion Boards

1954 Starter Relay 903 Hookup

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  • John L.
    Expired
    • February 1, 2005
    • 207

    1954 Starter Relay 903 Hookup

    I need some advice on the correct wire hook up for my starter relay....

    The correct starter relay is 1116886 (6 volt) which is hard to find - 1116904 is a 12v replacement which I do not have.
    What I do have is a new 1116903 starter relay for a 55-57 Chevy which according to some, this is a workable replacement even though it is a 12 volt.

    First what I do need to know or to verify is the correct wire hook up. Now it seems that since this is not a 4 prong relay I will not need to bother with running a jumper wire - is this correct?

    Secondly looking at the relay mounted to the firewall the prong at the 9 o'clock position would be the yellow wire from the starter, the next prong going counter clockwise almost center on the bottom would be the purple ignition switch wire, and the remaining prong would be the black neutral safety switch wire. You can see these on the photo below. Also included a photo of the underside of the relay so you can see the prong.

    It appears that the only difference in the 904 and this 903 relays are the prong attachment and the little disk or button on the bottow - they are switched.
    Anyways hopefully someone can confirm the wire attachments and if I need to use a jumper wire of any sort.

    Thanks, John
    Attached Files
  • Troy P.
    Extremely Frequent Poster
    • February 1, 1989
    • 1279

    #2
    Re: 1954 Starter Relay 903 Hookup

    John, I have no idea how to wire up that relay. But if you need one I have a spare restored 886 relay.

    Comment

    • Guy M.
      Very Frequent User
      • November 1, 1993
      • 499

      #3
      Re: 1954 Starter Relay 903 Hookup

      Hi guys, I only have the wiring diagram to go by. Troy, if John decides not to buy it I wil. I just learned I need the same relay thru this thread or if anyone out there has an extra one I would be happy to buy it. Just when I thought I had everything, go figure.

      Comment

      • John L.
        Expired
        • February 1, 2005
        • 207

        #4
        Re: 1954 Starter Relay 903 Hookup

        Go for it Guy if Troy still has it .....I will not need the relay for a couple more years since I am only starting the body work. You are closer to finishing your 54 than I am. As long as I know what I am looking for I am sure a relay will pop up sometime in by the time I really need it.
        Can't wait for warm weather!!!
        John Lanning

        Comment

        • Troy P.
          Extremely Frequent Poster
          • February 1, 1989
          • 1279

          #5
          Re: 1954 Starter Relay 903 Hookup

          I have no idea if the 903 relay would wire up the same as the 886. The terminals could be totally off. But if I had a 903 and 886 together and opened both covers I think I could figure it out. But then again....

          Not even sure how to proceed to experimentally figure it out. If I recall my math classes, there are 3 factorial combinations of three wires. If so that would give you 27 choices to wire three wires to three terminals. If I'm wrong and its 3 squared you only have 9.

          Comment

          • Guy M.
            Very Frequent User
            • November 1, 1993
            • 499

            #6
            Re: 1954 Starter Relay 903 Hookup

            John I appreciate it, Ill keep my eyes open for you, If I locate it I'll let you know!

            Comment

            • Chris S.
              Extremely Frequent Poster
              • January 1, 2000
              • 1064

              #7
              Re: 1954 Starter Relay 903 Hookup

              on the 4 prong relay - it can be converted to a three prong - A heavy gauge wire needs to be run from the fourth terminal to the side terminal
              many guys "make" the 903 look like a 886.
              You would have to talk with a relay rebuilder ......
              real 886 are $$ and hard to come by
              1954 Corvette #3803 - Top Flight 2012, Bloomington Gold 2012,
              Triple Diamond Award 2012, Gold Concourse Award 2012, Regional and National Top Flight 2014
              1954 Corvette #3666 - "The Blue Devil" - Pennant Blue - restoration started
              1957 Corvette - FI 3 sp - Black and Silver

              Comment

              • Troy P.
                Extremely Frequent Poster
                • February 1, 1989
                • 1279

                #8
                Re: 1954 Starter Relay 903 Hookup

                Chris, 903 is a 3 prong relay. Different bag of worms.

                I think I have one around in the shop. I'll try to remember to check and see what I can learn about it.

                Comment

                • Chris S.
                  Extremely Frequent Poster
                  • January 1, 2000
                  • 1064

                  #9
                  Re: 1954 Starter Relay 903 Hookup

                  sorry - I meant the 4 prong.......
                  1954 Corvette #3803 - Top Flight 2012, Bloomington Gold 2012,
                  Triple Diamond Award 2012, Gold Concourse Award 2012, Regional and National Top Flight 2014
                  1954 Corvette #3666 - "The Blue Devil" - Pennant Blue - restoration started
                  1957 Corvette - FI 3 sp - Black and Silver

                  Comment

                  • John L.
                    Expired
                    • February 1, 2005
                    • 207

                    #10
                    Re: 1954 Starter Relay 903 Hookup

                    Thanks for the information....I have a 1116969 as well (4 prong) that I am going to pull the cover on both and compare the interior - will post the photos for others to see.
                    John

                    Comment

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