Wiring help

[lak2004]

Ok so I got a cool new switch for my electric fans but I am not sure how to wire correctly. It is an ON OFF ON switch and I want the middle to be completely off, the top to be Big Fan ON using the thermo switch and the bottom to be both fans ON. Thanks guys
Here is a diagram of the switch:

Pics of Switch:

 

[lak2004]

bump

 

[5280k5]

Ok, first thing would be if you plan on making the fans an ignition on type power or going straight to battery so you can run the fans with the truck off? Terminal 5 will be up you then, either B+ or ignition 12v. Terminal 2, Ground is obviously ground but I would run it to either a factory ground stud or out to the battery to be sure of a good connection.
Both fans are going to using relays so the inputs from the switch will all be low current and the high amp circuits to the relays should come from the battery, inline fused and use decent gauge wire size(bigger is better IMO)
Looks like in your picture of the switch terminals 6 & 3 are the top of the switch, so with the top depressed terminals 1 & 4 are connected. I have to imagine the switch is using power and ground to light up to indicate when it's being used.
I would wire both fans relays with 12v, ground and use the signal from the switch as the low current turn on. Obviously the output wires from relays go to the fans so again use appropriate size wiring. Ground from the fans go to a GOOD ground, battery/engine block, just use good size wire and make sure your connections are clean/tight.
For the big fan use terminal 4 to go through thermo switch to the relay, so it only turns on once the thermo switch closes.
For both fans use terminal 6 to send a low current signal to both relays turn on (the big fan relay will wind up with two wires at the turn on signal terminal).
Does this make any sense

 

[lak2004]

That kind of makes sense. I already have the fans wired up and running to a switch in the cab right now but its either off or on and controls both fans. I have that wiring diagram too.

Thanks!

 

[lak2004]

Btt

 

[lak2004]

Still confused

 

[lak2004]

Ok, first thing would be if you plan on making the fans an ignition on type power or going straight to battery so you can run the fans with the truck off? Terminal 5 will be up you then, either B+ or ignition 12v. Terminal 2, Ground is obviously ground but I would run it to either a factory ground stud or out to the battery to be sure of a good connection.
Both fans are going to using relays so the inputs from the switch will all be low current and the high amp circuits to the relays should come from the battery, inline fused and use decent gauge wire size(bigger is better IMO)
Looks like in your picture of the switch terminals 6 & 3 are the top of the switch, so with the top depressed terminals 1 & 4 are connected. I have to imagine the switch is using power and ground to light up to indicate when it's being used.
I would wire both fans relays with 12v, ground and use the signal from the switch as the low current turn on. Obviously the output wires from relays go to the fans so again use appropriate size wiring. Ground from the fans go to a GOOD ground, battery/engine block, just use good size wire and make sure your connections are clean/tight.
For the big fan use terminal 4 to go through thermo switch to the relay, so it only turns on once the thermo switch closes.
For both fans use terminal 6 to send a low current signal to both relays turn on (the big fan relay will wind up with two wires at the turn on signal terminal).
Does this make any sense

I kind of understand this, but not completely. So I wouldn't be using terminals 1 and 3 then? Or do I ground those?

 

[5280k5]

Ok, I looked at how you're using the relay in your second pic. The ground trigger to the relays is either through the thermal switch or manually engaged through your select switch. Ok, you'll want to run terminal 1 to the thermo switch and from the thermo switch to the big fan relay(if you only want it to operate by itself) and then use terminal 3 to splice out to both relays ground inputs to turn on both fans. Use terminal 4 & 6 to the relays at terminal 86 like your picture shows. Everything else should work the way you've got it.
If you're still getting hung up, pm me with your phone # and we can talk it over