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SaiZo · Feb 21, 2013, 08:32 AM

My electronics is a bit rusty, but what I'm trying to do is to connect an SPDT switch (a three-way switch infact..) to act as an on/off for my fans.

The fans are not powered by the system anymore, but an external source, since I only have 1 PWM header and to that one another fan is already connected.

Ok, so to the question: Should I use the positive or the negative lead connected to the switch, I just can't remember how to connect them.

Thanks

Feb 21, 2013, 08:32 AM	#1
SaiZo Join Date: Apr 2011 Location: Hesperus IV Posts: 366 (0.48/day) Thanks: 541 Thanked 41 Times in 33 Posts System Specs	Question about switches and 12v leads. My electronics is a bit rusty, but what I'm trying to do is to connect an SPDT switch (a three-way switch infact..) to act as an on/off for my fans. The fans are not powered by the system anymore, but an external source, since I only have 1 PWM header and to that one another fan is already connected. Ok, so to the question: Should I use the positive or the negative lead connected to the switch, I just can't remember how to connect them. Thanks

System Name:	Oh Crap..
Processor:	AMD Phenom II X6, 1055T
Motherboard:	MSI (cant remember model..)
Cooling:	Antec Kühler + extra Antec fan (push/pull)
Memory:	16Gb (2 x 8Gb)
Video Card:	nVidia GTS 250
Hard Disk:	Samsung 1TB, 320 Seagate, 250 Samsung
Optical Drive:	Labelflash (OEM DVD burner - salvaged)
CRT/LCD Model:	LG Electronics
Case:	ANTEC Sonata III 500 (found/salvaged)
Sound Card:	8Ch + Harman Kardon 2.1
PSU:	Something that works strange enough..
Software:	Win7 X64