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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Jul-21-2014, 05:35:13 AM   #11
dunkman23
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Default Re: How to mount a Spal Electric fan to the stock shroud

Quote:
Originally Posted by infinkc View Post
It's fairly simple so I didn't post all the details. It's just a standard relay.
12 from the battery jump post to terminal 30
Terminal 87 to the fan +
Terminal 85 to one side of the thermostat switch
Terminal 86 to 12v ignition( I used the red wire with white stripe)
Picture from FastM


Since the fan wire was on top, it fits perfectly through the shroud as there is a square cutout.

You can always come seee and I can help ya.

sounds good. Ill contact ya if i have troubles in the future with this.
do you notice the car running cooler with the electric fan?
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Old Mon, Jul-21-2014, 07:21:09 AM   #12
E46_M3_ZCP
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Default Re: How to mount a Spal Electric fan to the stock shroud

http://www.turnermotorsport.com/p-34...an-delete.aspx
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Old Mon, Jul-21-2014, 08:33:12 AM   #13
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Default Re: How to mount a Spal Electric fan to the stock shroud

Did you still keep the stock AUX fan with this setup?
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Old Mon, Jul-21-2014, 05:01:39 PM   #14
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Default Re: How to mount a Spal Electric fan to the stock shroud

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Originally Posted by E46_M3_ZCP View Post
haha, this is why I love Turner!
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Old Mon, Jul-21-2014, 08:01:33 PM   #15
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Default Re: How to mount a Spal Electric fan to the stock shroud

IMHO I wouldn't use a T-Tap on such a high current connection; the SPAL fan draws 10's of Amps (maybe up to 50 or so) during startup so the possibility of arcing is quite high.

I'd try to source some BMW connectors and tap into a power block somewhere (or wire directly to the "B+" terminal in the engine bay, through an appropriate fuse or circuit breaker) or if you must splice into the OEM harnesses, at least use a method like this:

Military Splice:
http://www.gm-trucks.com/forums/topi...splice-how-to/

I'd add solder to that and some heatshrink tubing or electrical tape for safe measure.
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Old Mon, Jul-21-2014, 09:22:55 PM   #16
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Default Re: How to mount a Spal Electric fan to the stock shroud

Quote:
Originally Posted by (///M)ZOO View Post
Did you still keep the stock AUX fan with this setup?
Yes still have the aux front fan as the climates are hotter where im at than most places during the summer. If you do delete the aux fan you can use the aux fan controller instead of the separate fan switch/relay.

Quote:
Originally Posted by m2pc View Post
IMHO I wouldn't use a T-Tap on such a high current connection; the SPAL fan draws 10's of Amps (maybe up to 50 or so) during startup so the possibility of arcing is quite high.

I'd try to source some BMW connectors and tap into a power block somewhere (or wire directly to the "B+" terminal in the engine bay, through an appropriate fuse or circuit breaker) or if you must splice into the OEM harnesses, at least use a method like this:

Military Splice:
http://www.gm-trucks.com/forums/topi...splice-how-to/

I'd add solder to that and some heatshrink tubing or electrical tape for safe measure.

I did not use a T-tap, as mentioned it was only a reference picture i took from an AE install writeup to show what color wire was used. But its only powering the relay so it is not high current at all, so a T-tap would suffice fine. The high current power was tapped at the positive jumper location using a ring terminal on the backside post.

Quote:
Originally Posted by ILLuSioNz X View Post
haha, this is why I love Turner!
Its actually a BMW OEM part, not something turner makes. part 11511310640

Last edited by infinkc; Mon, Jul-21-2014 at 09:27:48 PM.
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Old Mon, Jul-21-2014, 09:39:59 PM   #17
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Default Re: How to mount a Spal Electric fan to the stock shroud

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Originally Posted by (///M)ZOO View Post
Did you still keep the stock AUX fan with this setup?
If following the exact wiring, yes.

Ever noticed the AUX fan keeps running even after you turn the car off? Cause the wiring for the SPAL fan is connected to the accessory on/off it will not run when the vehicle is turned off.
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Old Fri, Aug-15-2014, 03:24:13 AM   #18
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Default Re: How to mount a Spal Electric fan to the stock shroud

Quote:
Originally Posted by infinkc View Post
It's fairly simple so I didn't post all the details. It's just a standard relay.
12 from the battery jump post to terminal 30
Terminal 87 to the fan +
Terminal 85 to one side of the thermostat switch
Terminal 86 to 12v ignition( I used the red wire with white stripe)
Picture from FastM showing the wire used.


Since the fan wire was on top, it fits perfectly through the shroud as there is a square cutout.

You can always come seee and I can help ya.
I just bought the same fan and harness. Looking at the instructions for the harness, the other terminal of the thermostat switch goes to 12v ignition and terminal 86 of the relay is ground. You have it where the other terminal of the thermostat is ground and terminal 86 of the relay goes to 12v ignition. What is the reason for changing the wiring? Does the fan stop when the ignition is off?
Thanks.
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Old Fri, Aug-15-2014, 04:23:23 AM   #19
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Default Re: How to mount a Spal Electric fan to the stock shroud

Quote:
Originally Posted by avusbluem3 View Post
I just bought the same fan and harness. Looking at the instructions for the harness, the other terminal of the thermostat switch goes to 12v ignition and terminal 86 of the relay is ground. You have it where the other terminal of the thermostat is ground and terminal 86 of the relay goes to 12v ignition. What is the reason for changing the wiring? Does the fan stop when the ignition is off?
Thanks.
I changed the wiring around because I don't like running 12v lines longer than they have to be. Say the 12v wire got pinched somewhere it would short out and fry the wire unless you fused it. Having the negative wire is just safer, if it some how gets shorted, the worst thing is the fan will run constant. Also if you were to run the 12v instead, you need more wire as you need to run the 12v to the switch, then the wire back up to the relay. Having a negative trigger, you just need to ground the other side of the switch to a nearby ground.

Last edited by infinkc; Fri, Aug-15-2014 at 04:33:57 AM.
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Old Fri, Aug-15-2014, 04:27:54 AM   #20
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Default Re: How to mount a Spal Electric fan to the stock shroud

Thanks for the write up!

It looks like you could have ran the larger deeper higher flowing capacity fan even!

Curious, with the way the fan is mounted on the shroud, how far is the actual fan from the radiator? 1"?
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Discussing How to mount a Spal Electric fan to the stock shroud in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)