Electrical question?

[Local Boy]

:wave:Hey guys,

I'm currently setting up for a new T/C :banana:and 'am installing a tranny cooler. I will be putting in a B&M cooler w/ fan, and 160*thermostat...

Question: How do I wire It up? (no instructions)

Do I wire it this way...

Hot (+) wire to thermostat...

thermostat to (+) fan wire...

fan (-) wire to ground (frame)...

One more question: Where do you get your power from? Which wire can I tap into?

Thanks;)

:wave:ALOHA

[ImpalaSlayer]

eletrical = scary

[finster101]

I would definately use a relay in a fan circuit. They tend to pull a lot of amps.

[sailsmen]

I am curious as to why you need a cooler w/ a fan?

How much HP are you planning, any road racing?

[Local Boy]

Scary indeed my friend...This is why I appreciate all the people here (MM site). Without you guys...I would be in trouble...

Hawaii weather can get pretty hot + stop and go traffic (city) + 3500 stall + J-Mod + stomping on it from most stop lights = HEAT. There is no such thing as "too cool" for tranny temps here in the islands...

Just want to be as cool as possible + Because it will mount where the horns are...I'm hoping that the fan will help cool the A/C condenser and radiator as well...which will be behind it...

I 'm always looking to add more Hp...considering going S/C 'ed when the time is right...

Now, back to my question...Tapping off the fan relay is a good idea...How about the wiring though...Is the way I posted correct?

Thanks

ALOHA

[magindat]

It doesn't matter, the thermostat is just a switch.
However, it is not of sufficient amperage to carry the current required to directly power the fan. It will eventually lock either open or closed.

That said, use a relay.
B+ goes to the relay (30)
B+ goes to the thermo switch (IN)
G- goes to the relay (85)
Thermo switch (OUT) goes to relay (86)
Relay (87) goes to Fan +
G- goes to Fan -

Now the thermo is only tripping the minuscule load of the relay coil and the relay is carrying the load of the fan.

[magindat]

Tapping off the fan relay is a good idea.

No it isn't. The radiator fan is a PWM signal.

[Local Boy]

Thanks my Brutha (Magindat)...

I hope one day I can return the favor...

I remain forever grateful...

ALOHA

[magindat]

Thanks my Brutha (Magindat)...

I hope one day I can return the favor...

I remain forever grateful...

ALOHA

Anytime. Let us know how it turns out!