2G Using stock rad fan wiring for SPAL

[fAt_sUnNy]

I recently installed a 14b and unfortunately had to get rid of the stock radiator fan cos of the damn j pipe.

I bought a 12" SPAL fan and wanted to use the plug off the stock fan to wire up to the SPAL. The spal has two wires, one blue one black. The stock fan has four wires leading from the plug to the fan motor: blue, black, yellow, and green.

Do I wire the yellow and green to each other, and the blue to the blue and black to black? I looked at posts regarding wiring SPALs and no one mentioned yelow or green wires so maybe they were referring to the wires coming from the car, not the fan. I'd rather know what im doing before messing with electrical stuff so any help will be appreciated thanks

 

[DSMJim]

I honestly can not remember what wires it is but I will tell you how I did my car.

If you ground ecu pin 21 that will turn on the rad fan in low which is normally what the car uses for cooling. Hook up your fan to that relay/wire (I have two fans and they both run on that one) which is what your ecu turns on to make the fans come on. You will know what wire is ground and 12+ simply by putting your multi meter on it, and make sure you get positive and neg right or your fan will spin the wrong direction. Your meter should tell you if it's in reverse by displaying a negative sign. Test it on your battery first to see.

 

[Mindslayer]

Just cut the stock fan wire right before the harness and you'll be fine. And color match it like i did. Leave a few inches if you want to put your stock fan back on.

 

[doug]

This may help some:

http://www.dsmtalk.com/forums/showthread.php?t=87330

 

[fAt_sUnNy]

Thanks for the quick responses.

Doug, that link you posted looks very helpful. I read over it once but will look over it a couple more times. Hopefully I'll figure this out

 

[doug]

Good luck with it. I've also read that you can combine the two circuits by tying 1 and 3 (White/Black and White/Blue) together and 2 and 4 (Black and Blue/Green) together. This is what I'm planning to do with the slimline fan I just put in.

 

[95gstHRCsuper20]

The best way to explain it is 1 is the pos. for the the cooling fan lo speed, this wire relay is switched on through your pcm. 3 is the pos for the high speed which is controlled mainly by the condenser fan relay of course they both are somewhat controlled by the pcm. What you need to understand is the circuit protection features you may be bypassing if you just connect 1 & 3 for positive and 2& 4 for ground. The ground circuits you can simply hook together no problem. The best way to protect your circuitry on the pos. is to get yourself to diodes capable of at least hadlind 20 amps, this is the fuse and fusible link rating. Connect 1 to a diode and 3 to a diode make sure your directions is correct or they won't work, then connect the other ends of your diodes together and to the slimline. Keep your circuits safe.

 

[99gst_racer]

For anybody still trying to figure out how the rad. fan wiring goes, I have sucessfully figured it out today.... It goes:

Blue-green AND Black wires to the fan's ground wire and
White-black AND White-blue wires to the fan's power wire.

There is no side effects to doing this like this and the fan will operate just as the stock fan did.

 

[sweet97]

I just added a slim line and wired it to the stock harness so it comes on just like the stocker, i'll check it in the morning. It was simple because i did it!

 

[99gst_racer]

I just added a slim line and wired it to the stock harness so it comes on just like the stocker, i'll check it in the morning. It was simple because i did it!

haha, 1G's are totally different. It's much easier because you have two wires: a hot and a ground. Whereas 2G's, there is 4 wires and the slimline fans only have two..... What I said above applys for 2G's only.

 

[doug]

I have sucessfully figured it out today....

YOU figured it out, huh? Must've missed post #6 above.

I'm glad to hear this works for sure, though-- I haven't had a chance to wire mine up yet.

 

[Staytuned]

Good luck with it. I've also read that you can combine the two circuits by tying 1 and 3 (White/Black and White/Blue) together and 2 and 4 (Black and Blue/Green) together. This is what I'm planning to do with the slimline fan I just put in.

I also did this a month a go on my dual FAL fans. No problems yet.

 

[99gst_racer]

YOU figured it out, huh? Must've missed post #6 above.

I'm glad to hear this works for sure, though-- I haven't had a chance to wire mine up yet.

Well, lets rephrase that. I didnt really 'figure it out'. More like, I did actually wire mine like that and I did find sucess in it. I just wanted to let you guys know that that way of wiring does infact work.

 

[doug]

Yeah, I knew what you meant-- I was just messin' with you a little.

Hopefully I can get mine wired up this weekend-- the fan is already in place, but just not hooked up to anything.

 

[fAt_sUnNy]

Just to keep everyone updated, I also wired my fan the way 99gst_racer did and it works just like stock

The slim spal fan is hella louder than the stock one but it sounds pretty crazy

 

[jb95gst]

For anybody still trying to figure out how the rad. fan wiring goes, I have sucessfully figured it out today.... It goes:

Blue-green AND Black wires to the fan's ground wire and
White-black AND White-blue wires to the fan's power wire.

There is no side effects to doing this like this and the fan will operate just as the stock fan did.

One question, did you wire the AC fan this way also?
I was wondering b/c I might want to wire it so the AC fan comes on also. Right now I have a switch turn the ac fan also. I don't know if I will need that with the slimline, but I sure do with the stock ones.
Thanks,
JB

 

[99gst_racer]

One question, did you wire the AC fan this way also?
I was wondering b/c I might want to wire it so the AC fan comes on also. Right now I have a switch turn the ac fan also. I don't know if I will need that with the slimline, but I sure do with the stock ones.
Thanks,
JB

Actually, I dont even have an AC fan anymore. But, I will be installing on this week, and I will be wiring it to kick on with the radiator fan instead of the AC. I dont use AC anymore, but it would be nice to have a second fan there to aid in radiator cooling.

 

[98gstshadow]

ok after reading this I thought someone told me there were 3 signals and only 1 ground? am I correct or is there only 2 positive and 2 neg???

 

[doug]

My understanding is 2 pos, 2 ground. That's how I have my 2-wire fan hooked up-- fan pos to both stock positives, fan ground to both stock grounds. Seems to work fine.

 

[jb95gst]

This is what I did and it worked, although I have switched to a Flex-a-lite fan set up that cools alot better because I was still overheating. I do have to say that I like these fans better because they have the shroud and the control box that allows the temp to be set to turn on.
JB

 

[99gst_racer]

My understanding is 2 pos, 2 ground. That's how I have my 2-wire fan hooked up-- fan pos to both stock positives, fan ground to both stock grounds. Seems to work fine.

^^^ Yup, same here. ^^^

I have mine like it was 2 positive and 2 ground and it's working great. I first thought it was 3 pos. and 1 ground, so I tried it and it blew the fuse as soon as the fan tried kicking on.

 

[Staytuned]

Two +'s and two -'s per side and all is well so far this summer. Not one relay problem, not one fuse problem.

 

[98gstshadow]

oh thanks gst racer I remember the last post about the fans and everyone was saying 3 pos and 1 ground, can u tell me which 2 are positive? thanks

 

[99gst_racer]

oh thanks gst racer I remember the last post about the fans and everyone was saying 3 pos and 1 ground, can u tell me which 2 are positive? thanks

No problem. Post #8 lists which wires are hot and which are grounds.

Blue-green AND Black wires to the fan's ground wire and
White-black AND White-blue wires to the fan's power wire.

 

[98gstshadow]

muchas gracias senor