1. Please sign in or join the Thunderbird club free to access the search page and many other free site features.
    If you forgot your password click here.

    Click the "X" to the right to dismiss this notice.
    Dismiss Notice

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. Poppy Red

    Poppy Red Active Member Lifetime Donor

    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.

Help us by sharing/liking this page!

Shop Amazon.comPlease shop Amazon.com using this link to support the forum!