This is a quick How To on the basics of an E-Fan install. This is how i did mine, and its worked out great!
Feel free to add any info that could help people with this.
Also, i nor is this site, responsible for if you do this mod and something doesnt work or goes wrong. every truck is different, and you may have to improvise.
Now, Lets begin!
first off your going to need to remove your old fan:
as you can see, very little room before:
First thing to do is pull the intake:
Next, pull the fan and unbolt the shroud. (2 bolts on shroud)
i didnt have the tool to remove the bolt, so i took a big hammer and a chissle and hit the edge of the bolt, and it spun off my hand. 4.0 is regular thread, right tight left loose. 3.0 is backwards (right to losen) not sure what 4 Cyl is, sorry.
Tons of space now!
Had to make my own mounts, made out of stainless. probably 14 guage. get the fan where you want it, then setup how you want to mount it. MAKE SURE IT CLEARS EVERYTHING!!!
alow for atleast a half inch.
Now, you need to get a few things together.
1x Thermostat to turn on power at set temp. (get adjustable one)
2x relays ~ Dual Pole type 30A(get what the fan draws on high) I reccomend waterproof ones.
1x roll of 10 guage wire (power to fan and ground)
1x roll of 16 guage for signal wire
3x packs of female conectors 10 guage
2x pack of female conects 16 guage
1x pack butt connectors 10 guage
2x pack vampire clips 16 guage.
1x 30A inline fuse
remember, depending on the fan you use, these numbers and wire thinkness can change!
what you need to do is find a ignition power wire (on when key is on) for the T-Stat's power, so it can send power down the signal wire, to trip the relays. I used the wire that runs to my cig lighter, as its setup for ignition on off.
baiscally, the thermostat comes on with the truck. when it senses heat, at a certain temp it send power down the signal wire to one relay. that relay is grounded, so it activates the switch on the relay.
Power from the battery (with fuse inline) goes into #30. when power from the thermostat is sent to the relay, it goes through #85 and the to a ground plugged into #86. this activates a coil, which sends the power from the #30 to the #87(not "a") and into the fan. #87 is plugged into the fan high wire.
now, this is what turns the high speed on. works great cus you can adjust it on the T-Stat.
now, for low, you run a wire from the positive on the ac pump, to the second relay #85. be sure to run a ground for #86 in this relay as well.
now heres where the first relay comes back into play. Run a wire from the #87a on the first relay, to the #30 on the second relay. this will now give the second relay power when the first one is not activated by the T-Stat. Now, run a wire from the low speed on the fan, to 87(not "a") on the second relay. What this does, is cycles the slow speed with the AC pump.
why you do this:
you must have a fan going on the ac condensor when the ac is running.
this setup runs the slow speed on the ac cycle, but if the T-stat senses high temp, it will disconect the slow relay and run the high until the temp drops, then bringing the slow back on and running it with the ac. Note: it will only run with the ac if its on. if the ac is not on, it wont run slow speed. .
if done correctly, when you start the truck and trun the ac on, the slow will kick on. if the truck gets too hot, the high will bypass the low, cool it and then return power to the low speed relay. if the ac is off and the temp is below the setting, no power will be drawn.
if you got lost in that heres a simple wire setup:
#30 is power in
#85 is signal in
#86 is signal out (or ground)
#87 is power out when signal wire is powered
#87a is power out when signal wire is not powered.
now, 87 and 87a could be switched depending on what kind of relay you get. meaning the off plug could be 87a not 87.
if you look at a relay, theres 2 plugs going one way, and 3 going the other.
the two are power out. of the 3 going the opposite way, the ones across from eachother are signal, and the one alone is power in.
any questions email Clarke_n@live.com