Need 5 pin relay help. Wiring up fans
10-01-2008, 07:53 PM
#1
Need 5 pin relay help. Wiring up fans I have Big Stuff 3 on the car. We just hooked up the two cooling fans to the the BS3 using two Bosch 5 pin relays. The fans only turn on when the BS3 give them the signal to turn on. I want to be able to turn the fans on when the car is off, so it can cool down at the track. How would I be able to wire up a On/Off switch using that 5 pin relay? I figure someone on here must know more about relays than me. Thanks
10-01-2008, 08:51 PM
#2
TECH Enthusiast
iTrader: (8)
Join Date: Dec 2006
Location: Jax, FL
Posts: 501
Likes: 0
Received 0 Likes
on
0 Posts
Not sure what the setup is that you're talking about that you have.. But I'll tell ya how I tapped into my relay for my fan so I can manually turn it on/off any time.
First, you'll need a power source inside the cabin. My fan switch is in my console near the ashtray, so I just tapped into the cig lighter positiver wire for my power source. Depending on what kind of switch you use, you may also need a negative source, in that case the cig lighter negative wire will be just fine to tap into.
From there, you wire from the source you tapped into, to the switch. Then run another wire from the switch to the engine bay to the relay. If you look at the relay, you'll see numbers on the bottom. I tapped my wire into the wire that ran to the number 87 pin of the relay.
From then on, just flip the switch inside, and your fans should turn on.
Hope this makes sense.. I'm really bad at explaining electrical things lol.
First, you'll need a power source inside the cabin. My fan switch is in my console near the ashtray, so I just tapped into the cig lighter positiver wire for my power source. Depending on what kind of switch you use, you may also need a negative source, in that case the cig lighter negative wire will be just fine to tap into.
From there, you wire from the source you tapped into, to the switch. Then run another wire from the switch to the engine bay to the relay. If you look at the relay, you'll see numbers on the bottom. I tapped my wire into the wire that ran to the number 87 pin of the relay.
From then on, just flip the switch inside, and your fans should turn on.
Hope this makes sense.. I'm really bad at explaining electrical things lol.
