North American Turbocoupe Organization



fan switch question
cammed99 Offline
Member
#1
I would like to wire at least one of my fans to a manual switch, can I just follow the instructions for the 83-86 cars in the faqs? I've never wired anything "correctly" and I would like to do so this time with the correct relay and what not. I can wire it up with no relay and just to a hot source like I've done things on other cars but I'd like everything to be ok for a long time afterwards.

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88 turbo coupe, 5 speed, stock Big Grin with a gillis valve and 3 inch downpipe and exhaust, ported exhaust side on the head, fresh bearings and rings, fresh head, mustang roller cam, .60/.63 T3 and now someone needs to give me a header

4 other vehicles, all fords and all unique
89 TTA (yes the turbo one)
65 Mustang Fastback 2+2
98 GT
99 Ram 2500 4x4 Cummins on 35's
82 Bronco 4x4 FOR SALE
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tylerport Offline
Senior Member
#2
Yes, you can follow those instructions. Using a relay keeps the high amperage draw that a fan motor has from melting the switch an it also shortens the path for the high amp load.

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Jim Portteus
NATO Member
My Car
86 Turbo Coupe, LA3 w/ Intercooler and Larger VAM, Gillis Valve, 2 1/2" Downpipe to 2" Duals w/ 18" Glasspacks, 245/50R16's, 140MPH Speedo, A-pillar pod w/ Boost and A/F Ratio Gauges and Steeda Tri-Ax Shifter.
Jim Portteus
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Jeff K Offline
Administrator
#3
Never wire a high amp load like a fan to an existing circuit. Power the fan via a relay, with the high current side of the relay coming directly from the batt pos terminal or hot terminal on the starter solenoid. Use a switch to trip the relay.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 21 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 02 Taurus Vulcan(wifes car)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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tylerport Offline
Senior Member
#4
. . . and don't forget to use a fuse or circuit breaker to protect the new wiring! It should be installed as close to the Battery as possible. Don't want it shorting out and causing a fire.

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Jim Portteus
NATO Member
My Car
86 Turbo Coupe, LA3 w/ Intercooler and Larger VAM, Gillis Valve, 2 1/2" Downpipe to 2" Duals w/ 18" Glasspacks, 245/50R16's, 140MPH Speedo, A-pillar pod w/ Boost and A/F Ratio Gauges and Steeda Tri-Ax Shifter.

[This message has been edited by tylerport (edited 05-31-2004).]
Jim Portteus
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