Electrical help please!! - Wiring Maxima fans-

[gotta240]

So i've been messing with the maxima fans. Here are the results i got.

When i put Blue and Green to positive, with yellow and black to negative the fans spin SUPER FAST in pulling direction. When i remove any wire(neg or positive) the fans spin "slow".

I have a generic temperature controlled fan controller. The controller has its own relay which reads

TIANBO
NO:40A 14vdc
NO:50A 14vdc
TRV4-L-12V-Z

The fan controller has TWO leads for fans. One orange(fan 1) and one blue(fan 2). My plans are to connect the orange power to one fan and the blue power to the other fan . Each fan will have both positive leads connected together and both negative leads connected together, leaving the fan in HIGH mode whenever powered on.

Providing i connect my fan controller to a 12v source(directly to the battery), will this single relay(which is built into the fan relay) be enough for my setup? The fans WILL NOT be running at all times, only when temps reach 190 or so. When the fans do come on they will be both be full blast.

DO those plans sound ok and electrically safe? i am an electrical idiot, so any input/advice from EXPERIENCED people would be of great help.

[nissan240sxkid]

do you have apic of the leads on the controller

[gotta240]

Yes, i can take a pic, but not sure how that will help. They are just 14g wires.

[g6civcx]

Here's what you do.

Go find an FSM for the year Maxima your fan came from. I need to know the following:

1. How much max current do these fans pull? You can find this info in the EL section. Follow the fan wiring back to the fan relay and tell me how many amps the fusible link is. I'm guessing it's 30A for each fan, but I am not sure.

2. What does each each wire to the fan connected to in the FSM? If you tell me this, I can make the fan work just like stock. I think that in addition to ground, each of Blue and Green is for low/hi, but I don't know exactly.

I have a generic temperature controlled fan controller. The controller has its own relay which reads

TIANBO
NO:40A 14vdc
NO:50A 14vdc
TRV4-L-12V-Z

The fan controller has TWO leads for fans. One orange(fan 1) and one blue(fan 2). My plans are to connect the orange power to one fan and the blue power to the other fan . Each fan will have both positive leads connected together and both negative leads connected together, leaving the fan in HIGH mode whenever powered on.

I have no idea what this means. You need to contact the manufacturer of the fan relay, or try to download pinout instructions somewhere.

I need to know exactly what each pin does, and how much max current each pin can take.


Based on the 40A print, 14gauge wire is not going to be enough. You need at least 10gauge or thicker.

[gotta240]

Will do. Thanks for the reply!

One more quick question- Can i attach the grounds to the chassis(ie rad support) or do they need to go dirrectly to the battery?

thanks

[g6civcx]

Will do. Thanks for the reply!

One more quick question- Can i attach the grounds to the chassis(ie rad support) or do they need to go dirrectly to the battery?

thanks

You may ground directly to the chassis. In fact, the negative battery terminal is also connected to the chassis. So it all goes to the chassis in the end.

[gotta240]

Great. Another question!

When i hook up ONE power and ONE ground the fan spins at "medium" speed.

But when i hook up BOTH fan grounds, with only ONE POWER the fan spins faster. Not as fast as with both powers hooked up, but deffinitely faster than with just one ground.

Can you easily/quickly tell me

1. WHY?
2. Is it safe/ok to run both grounds and one power?

I dont see how connecting the fans second ground wire makes such a big difference when only one of the power wires is hooked up, but it does.

[g6civcx]

First, you need to stop hooking the fan directly to the battery without a fuse. You're risking burning out the fan motor.

I don't know why because I don't have an FSM. If you can dig up an FSM I will be able to tell you.

Again, stop experimenting or you'll damage the fan.

[gotta240]

Ok.... Going on hunt to find fsm...thanks!

[gotta240]

Ok, found the FSM for the maxima. How do i post it here? Can i send it to you?

thanks again!


edit...ahh, running out of time...drift event starts in 16 hours!!!

[g6civcx]

If you want to risk it, ghetto righ the fan to a switch, but don't be surprised if you blow the fan or your motor.

Do you have a link where you downloaded the FSM from?

[gotta240]

http://carfiche.com/manuals022/cars/

There is the link where i downloaded it from. Was hoping i could cut/paste but my comp wont let me do it from the download....


Just to get by tomorrows event, could i run the fans directly to the battery with a toggle switch and two 30A (one each fan) fuses?

IF so, should i put the fuses between the swith and the battery, or between the switch and the fans? Thanks again for all your replies/help.