Turbas130 Posted July 10, 2023 Share Posted July 10, 2023 Basically, i had bought an electric 16” hayden fan for my 1981 280zx and wired it exaclty how it said to wire it lt. however, when i started the car, the fan didnt spin and my radiator overheated quick. In the disgram this is how it said each wire is to be connected wire from fan to ground wire from fan to relay wire from relay to fuze to batt wire from relay to ground wire from relay to 12v constant wire from relay to thermostat probe sensor wire from relay to a/c Did all these correctly, since most of them are generally pretfy self explanatory. the constsntly live wire from the relay i connected to my washer motor underneath my washer res. have i done anything wrong as to why it may not be working? thanks Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted July 10, 2023 Share Posted July 10, 2023 The washer motor is switched - not constant...run it to the positive battery terminal. Quote Link to comment Share on other sites More sharing options...
jhm Posted July 10, 2023 Share Posted July 10, 2023 Kind of hard to understand the situation without the actual wiring diagram you’re using…but I’ll give it a shot. Is your “constsntly live wire” supposed to be connected to unswitched 12V? If so, your windshield wiper washer motor is not a good source— that’s a switched circuit, as Bradman pointed out. (However, it should still be providing 12V to the relay once the car is running, so I don’t know if that’s really the root of your problem.). I suspect your problem may be the relay. How many pins does it have, and was it provided as part of the fan kit? Finally, have you tested the fan by connecting directly to 12V just to ensure that it’s operating properly? Quote Link to comment Share on other sites More sharing options...
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