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1986 Water Separator Electrical Diagram

Discussion in '6.9L IH & 7.3L IDI Diesels' started by RDieselKid84, Mar 16, 2019.

  1. RDieselKid84

    RDieselKid84 Full Access Member

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    Does someone have the diagram for the seprator. I need to find witch wire go's to the water light. There's three wires going to it and what they are for. And if I can wire up a new style single wire seprator. Like the 87's have. I have all the manual's but not the electrical ones.
     
  2. Cubey

    Cubey Full Access Member

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    This is for 1990 vans, maybe it's the same?

    1990-ford-e350-wiring-diagrams-vNfprYS.jpg
     
  3. RDieselKid84

    RDieselKid84 Full Access Member

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    Thanks Cubey, but the 90 is a single wire hook up and the 83-86 used three wires and that is what I am looking for.
     
  4. ifrythings

    ifrythings Full Access Member

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    Hope this helps, pretty sure the ground wire is the case being bolted to the firewall.

    3E990362-E809-4D83-8D73-DE230E54123D.jpeg
     
  5. RDieselKid84

    RDieselKid84 Full Access Member

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    Thanks I believe this will help me, it shows me witch wire go's to the water light.
     
  6. RDieselKid84

    RDieselKid84 Full Access Member

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    Does enbody know where the fuel water switch is located on the 87 F250, it is the relay for the water in fuel light with a single wire sensor.
     
  7. Cubey

    Cubey Full Access Member

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    '
    I see 3 wires in the diagram for some reason.
     
  8. RDieselKid84

    RDieselKid84 Full Access Member

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    I checked and the three wires are the same but at a different location. They are on the seprator of the 86 and the relay some other location for the 87 with a single wire water seprator. Thanks for the reply.
     
  9. ifrythings

    ifrythings Full Access Member

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    The “relay” on the 87 is located on the engine beside the fuel filter and thermostat housing.
     
  10. Diesel8873ne

    Diesel8873ne Registered User

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    Not sure if the 88 is the same but mine is a 88 and my relay was melted. Old picture but might help with finding it 20190111_134449.jpg 20190111_134455.jpg
     
  11. RDieselKid84

    RDieselKid84 Full Access Member

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    Thanks, I found the one on my 89 right there also. I't was melted also. I guess I need a wiring harness and a relay to hook up my new water seprator and wire it in the circuit.Thanks for all the help I just didn't know where to look for this relay. Now I need a short harness and plug for the relay.
     

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