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66 TBird wiring help

Discussion in '1955 - 1966 Classic Ford Thunderbird' started by tmare, Dec 19, 2017.

  1. Hope someone can help. right behind the distributor and on the top of the engine block there is a connection nipple with a red with white wire coming off. Does anyone know what the wire is ???

    Thanks, Tom
     
  2. fordrodsteven

    fordrodsteven Well-Known Member Gold Donor

    My first thought was that location (rear of the engine, top of the block) is the oil sending unit. Then I looked at some wiring diagrams for the '66 Thunderbird. There is a red / white wire that shows in the transistorized ignition and it goes from the amplifier (through a harness) to the ballast resistor. Could that be the wire you are talking about? A picture would also be helpful if you could post it.
     
  3. fordrodsteven

    fordrodsteven Well-Known Member Gold Donor

    Unfortunately the diagrams also show a red-white wire for the water temp. sending unit and then a white-red wire for the oil sending unit. This is why I say a picture would be helpful.
     
  4. The small threaded "hub" behind the distributor is the temp sending unit. It should have a red wire with a white stripe. The oil pressure sending unit should have a white wire with a red stripe.
     

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