Where to connect fans
Thread Starter
Racer
Joined: Jun 2004
Posts: 452
Likes: 0
From: Southern Md
Where to connect fans
Have a 69 and am hooking up a electric fuel pump and electric cooling fans both to switched or key on power.Where do you guys connect them to. The only terminal I found on the fuse block was marked ACC and it does come on with the ign switch so I hooked my fans to this and they worked for a second and went dead. Now the ACC terminal is dead as well.There is no fuse for it that I can see, anyone know?. All the fuses test good in the block.
Pro
Joined: Jul 2004
Posts: 605
Likes: 0
From: Alta Loma CA
You need to run both of those thru relays. You can take the main relay power from the starter. Then you can find a wire that powers when the key goes on to trip the relays. I'm not sure where you can look on a '69 for that one. But the fans must have relays or you will always have issues with them.
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
first
upgrade your alternator to a cs130 or a cs144 alternator.
then run a wire from your starter lug to a fuse to a relay to the fan
power the relay with the yellow wire from the wiper motor.
ground the relay with a temp sensitive switch screwed into the head.
use at least a 75 amp relay
there are few posts around here with links to write up paperwork
upgrade your alternator to a cs130 or a cs144 alternator.
then run a wire from your starter lug to a fuse to a relay to the fan
power the relay with the yellow wire from the wiper motor.
ground the relay with a temp sensitive switch screwed into the head.
use at least a 75 amp relay
there are few posts around here with links to write up paperwork
Thread Starter
Racer
Joined: Jun 2004
Posts: 452
Likes: 0
From: Southern Md
Thanks for the help so far, but does anyone know why my ACC terminal in the fuse is no longer powered with the key on or off.It had power but now it's gone and there is no fuse in the box for this ACC spade.Is it not fused?.
Racer
Joined: Feb 2009
Posts: 265
Likes: 0
Probably a fusible link somewhere down the line that blew like it was supposed to. A fan that draws 20A is gonna blow that link. My Spal fan came with a relay- the low amp relay wire is on my ACC and the big amp wire to the fan is on the alternator.
Racer
Joined: Feb 2009
Posts: 265
Likes: 0
When I started my new 427, as soon as it got warm and the fan should've come on - it didn't. Ran fine by jumping a wire from the sensor to ground before I ever started the engine. Thought I mis-wired it and so much for getting it running that day, remembered it has an inline fuse- that was blown- but that only means there's a short. Not thinking, I replaced the fuse and pulled it into the garage to tear out the wiring, and realized the fan was running with the engine on! Never had a problem since- must've been a bad fuse that came with the fan. If there's a bad fusible- possible it's wired right and it'll be OK once it's replaced.
Last edited by kunkle; Apr 1, 2009 at 09:02 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski