jks67ss396

iTrader: (1)

Hey guys


For you guys using windstar fans in your conversions, what fuse rating are you using? 30 amps? 50? 60? I plan on using 2 fuses in case one blows, i still have another fan. im thinking 2 30s, but let me know what youre doing

thanks!

67Skylark

Using 50 amp self-reset circuit breaker hav about 6 ft of 12Ga wire between relays and fan. Have about 5 hours of run time sis all, no problems so far

bczee

iTrader: (12)

I would like a single 50 amp would be ok. Are you planning on running duel Fans ?.

How are you wiring up the Fan and Relay ?.. One Relay per Fan ? and are you going to be running the Fans in parallel from a single trigger source ?

IIRC.. those fan draw a lot of amp's.. you might need a 50 per relay.. Also, make sure the Relay is rated for the amp's.

jks67ss396

iTrader: (1)

im reworking the factory windstar harness to allow me to have independent control of each fan. the lm7 pcm will be able to do this. So each fan will have a fuse and each will have a relay.

That way, if one goes down (OC, fuse blows, relay pops whatever), id still have one.

Im using maxi fuse holders and im using the stock ford relays from a junkyard

my gut is 30 amps per fan, but wanted to know what others are doing

67Skylark

Two relays for now, plan to move to three when AC is installed. Only one 50 amp supply for fans and one 20amp for both relay coils, grounds supplied from E38 PCM.

jks67ss396

iTrader: (1)

ok, so i was reading that the factory ford relay that controls these fans is rated at 70 amps. Thats both fans.

i think ill start with 2 30A maxi fuses. i believe one fan is bigger than the other so the bigger may draw more, but if it does, ill just replace the fuse with something bigger, a 40A.

i grabbed the factory windstar relay harness and there are 2 relays in there. one is the big 70 Amp relay for the fans and there is another bosch style relay probably a 30-40 amp relay. Ill make sure that that smaller relay is rated for what i need (one fan).

Should be good to go with that

bczee

iTrader: (12)

I would think that If the relay is rated at 70 amp's, you should match the Fuse to the same rating.. ? If the relay needs to be a 70 relay, most likely the Fan will pull close to it max. !

jks67ss396

iTrader: (1)

the 70 amp relay is for Both fans... so figure the big fan might need 40 amps and the little one might need 30. im going to independently control them...

thunderstruck507

iTrader: (18)

I have mine set up on individual basic Bosch relays with 30 amp fuses. Been on the car that way for years and never popped a fuse.