1986 Water Separator Electrical Diagram

RDieselKid84

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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.
 

Cubey

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

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RDieselKid84

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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.
 

ifrythings

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

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RDieselKid84

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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.
 

RDieselKid84

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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.
 

ifrythings

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

Diesel8873ne

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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
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RDieselKid84

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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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