Mark VIII wiring idea

Stang951 · 05-17-2002, 06:19 PM

Just ordered the Mark VIII fan. I tried the Black Magic with the Griffin rad and it will not do, just plain sux.
I was thinking of wiring in two Painless relay kits. The first with the temp sender and the second with the a/c for the high speed. I could also addd a switch into the second relay to turn it on with a switch.

Does this sound like a good idea? From what I understand the Mark VIII fans are two speed right?

shadowblue89 · 05-17-2002, 07:33 PM

Yes they are a 2 speed fan but only if you have the fan control unit that comes with the car when you buy it. The fan by itself is only a single speed. It has a 3 pin connector on it.
One for POS
One for NEG.
The third pin is a signal wire to let the OEM fan control unit know that the fan is working. For us, the third pin is only good for hooking up a little light on the dash so you know it is running.

On a side note:
I hope you have upgraded you Alt. to at least a 130amp. This fan sucks up a lot of juice.

Stang951 · 05-17-2002, 07:45 PM

yeah already made that upgrade.
I am hoping this fan keeps the engine cool, as nothing else has worked, not even the aluminum radiator.
So do you think I should go with the temperature relay kit and just add a switch into that to turn it on or off when I want to?

shadowblue89 · 05-17-2002, 07:53 PM

Yeah, just go with a switch to turn it on or off and your temp sensor. I have not had a single problem with heat since I had to wire my fan direct. I used to have a PSM1 temp. control unit but it died.
Be cautious with the Aluminum Radiator as they are thicker then the copper rad. and you will have to cut the shroud a little more to make up for the tickness. Just don't take off too much as the fan blades will attack the radiator and make one hell of a mess.
Not shure where right off hand but there are a few links for pictoral walkthroughs of installing the fan if you searck at google.com.
Which ever car you put it in you will stay cool.

Stang951 · 05-17-2002, 07:57 PM

lxfiveoh · 05-18-2002, 11:49 PM

http://www.geocities.com/smithmonte/...rkVIII_Fan.htm

05-17-2002, 06:19 PM	#1
Stang951 Registered Member Join Date: Apr 2001 Location: Metairie, La. USA Posts: 132	Mark VIII wiring idea Just ordered the Mark VIII fan. I tried the Black Magic with the Griffin rad and it will not do, just plain sux. I was thinking of wiring in two Painless relay kits. The first with the temp sender and the second with the a/c for the high speed. I could also addd a switch into the second relay to turn it on with a switch. Does this sound like a good idea? From what I understand the Mark VIII fans are two speed right? __________________ Engine: 1990 5.8 / Edelbrock Performer set-up MSD ignition Suspension: Maximum Motorsports Caster-Camber Plates / Maximum Motorsports adjustable lower control arms / FRPP heavy duty upper control arms / Tokico Illumina Shocks and Struts / Ground Pounder Coil Over conversion kit front / Steeda cross brace sub-frame connectors / Drivetrain: Tremec 3550 trans / Steeda Tri-Ax shifter / Spec Stage II clutch and pressure plate / Spec aluminum flywheel / 5.8 in the hole

05-17-2002, 07:33 PM	#2
shadowblue89 Registered Member Join Date: Jan 1999 Location: Las Vegas NV Posts: 286	Yes they are a 2 speed fan but only if you have the fan control unit that comes with the car when you buy it. The fan by itself is only a single speed. It has a 3 pin connector on it. One for POS One for NEG. The third pin is a signal wire to let the OEM fan control unit know that the fan is working. For us, the third pin is only good for hooking up a little light on the dash so you know it is running. On a side note: I hope you have upgraded you Alt. to at least a 130amp. This fan sucks up a lot of juice. __________________ Charlie 89 GT 5spd

05-17-2002, 07:45 PM	#3
Stang951 Registered Member Join Date: Apr 2001 Location: Metairie, La. USA Posts: 132	yeah already made that upgrade. I am hoping this fan keeps the engine cool, as nothing else has worked, not even the aluminum radiator. So do you think I should go with the temperature relay kit and just add a switch into that to turn it on or off when I want to? __________________ Engine: 1990 5.8 / Edelbrock Performer set-up MSD ignition Suspension: Maximum Motorsports Caster-Camber Plates / Maximum Motorsports adjustable lower control arms / FRPP heavy duty upper control arms / Tokico Illumina Shocks and Struts / Ground Pounder Coil Over conversion kit front / Steeda cross brace sub-frame connectors / Drivetrain: Tremec 3550 trans / Steeda Tri-Ax shifter / Spec Stage II clutch and pressure plate / Spec aluminum flywheel / 5.8 in the hole

05-17-2002, 07:53 PM	#4
shadowblue89 Registered Member Join Date: Jan 1999 Location: Las Vegas NV Posts: 286	Yeah, just go with a switch to turn it on or off and your temp sensor. I have not had a single problem with heat since I had to wire my fan direct. I used to have a PSM1 temp. control unit but it died. Be cautious with the Aluminum Radiator as they are thicker then the copper rad. and you will have to cut the shroud a little more to make up for the tickness. Just don't take off too much as the fan blades will attack the radiator and make one hell of a mess. Not shure where right off hand but there are a few links for pictoral walkthroughs of installing the fan if you searck at google.com. Which ever car you put it in you will stay cool. __________________ Charlie 89 GT 5spd

05-17-2002, 07:57 PM	#5
Stang951 Registered Member Join Date: Apr 2001 Location: Metairie, La. USA Posts: 132	THX __________________ Engine: 1990 5.8 / Edelbrock Performer set-up MSD ignition Suspension: Maximum Motorsports Caster-Camber Plates / Maximum Motorsports adjustable lower control arms / FRPP heavy duty upper control arms / Tokico Illumina Shocks and Struts / Ground Pounder Coil Over conversion kit front / Steeda cross brace sub-frame connectors / Drivetrain: Tremec 3550 trans / Steeda Tri-Ax shifter / Spec Stage II clutch and pressure plate / Spec aluminum flywheel / 5.8 in the hole

05-18-2002, 11:49 PM	#6
lxfiveoh Registered Member Join Date: Mar 2002 Location: Miami, FL Posts: 54	http://www.geocities.com/smithmonte/...rkVIII_Fan.htm __________________ Nelson 1990 Mustang LX 5.0 http://fiveoh.homestead.com

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