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2nd Generation
Electric Fan Kit Question
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<blockquote data-quote="Mrelmtow" data-source="post: 37725" data-attributes="member: 862"><p>I wired my fan using only an additional 12v relay. It turns on the low speed fan when the A/C is switched on. I ran one wire from the junction on firewall (12V) to the circuit breaker (supplied with kit).I have two wires running from the other side of the breaker, each to a relay (one supplied & the other I bought) switch terminal. Two wires running from the normally open side of the relays are soldered together with a wire running to the fan (low speed). The fan is then grounded to a good ground (I used the firewall). The coil side of the relays are wired as follows. A switched 12 v source is run to the supplied relay, the other side of the coil is run to the temperature switch (provided with kit and mounted in the coolant) which will complete the circuit to ground when around 185 degrees is reached turning on the fan. I then tapped into the violet wire for the high pressure a/c switch, located along side the battery by the service port for the freon. I ran the wire to one side of the second relay ( the one that I bought) coil terminal and a wire from the relay coil (other side) to ground (again using the firewall connection). With it wired this way, the fan runs when engine needs it or when the a/c is on. Here is some pics of the relay mounting and the violet wire a/c tap.<a href="http://www.f150online.com/galleries/albumview.cfm?num=210" target="_blank">http://www.f150online.com/galleries/albumview.cfm?num=210</a></p><p>Hope this helps---Mike</p></blockquote><p></p>
[QUOTE="Mrelmtow, post: 37725, member: 862"] I wired my fan using only an additional 12v relay. It turns on the low speed fan when the A/C is switched on. I ran one wire from the junction on firewall (12V) to the circuit breaker (supplied with kit).I have two wires running from the other side of the breaker, each to a relay (one supplied & the other I bought) switch terminal. Two wires running from the normally open side of the relays are soldered together with a wire running to the fan (low speed). The fan is then grounded to a good ground (I used the firewall). The coil side of the relays are wired as follows. A switched 12 v source is run to the supplied relay, the other side of the coil is run to the temperature switch (provided with kit and mounted in the coolant) which will complete the circuit to ground when around 185 degrees is reached turning on the fan. I then tapped into the violet wire for the high pressure a/c switch, located along side the battery by the service port for the freon. I ran the wire to one side of the second relay ( the one that I bought) coil terminal and a wire from the relay coil (other side) to ground (again using the firewall connection). With it wired this way, the fan runs when engine needs it or when the a/c is on. Here is some pics of the relay mounting and the violet wire a/c tap.[url]http://www.f150online.com/galleries/albumview.cfm?num=210[/url] Hope this helps---Mike [/QUOTE]
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