On the GM one wire units you only hook the single wire to a battery positive connection, either at the battery or the solenoid. That bypasses the dash ammeter and it will not work. There is no provision to connect an ammeter to these unless you use one of the heavy duty units, because of the current that the alternator can put out. Personally I don't like the one wire systems because most put out almost nothing at lower engine speeds.
As for the temperature sensor, it sounds like the one you installed doesn't work with a Fords gauges or it's defective. Is it a factory part or something that came with the fans?
Saturday, March 21st, 2020 AT 12:13 AM