electric fan wires overheating bad

kratos2250 · October 18th, 2008, 03:44 PM

I have a 95 gt and my electric fan wires are getting so hot they are melting together. I have the power wire running straight to the battery, and the ground running through a toggle switch inside on the console. I keep burning through toggle switches too. Anybody know what I'm doing wrong? Thanks

gotn20 · October 18th, 2008, 03:58 PM

you need to have it on a relay man it'll help a bunch.

viperlocc · October 18th, 2008, 03:59 PM

When I hooked up things to a toggle switch i would put it on the pos. side, not the neg. side.
run a straight good ground and put the toggle on the pos side and see what that does for ya

kratos2250 · October 18th, 2008, 04:28 PM

I tried it on the pos side and it heated up just as much. I'll try the relay thing and see if that helps.

1FUN4RD · October 18th, 2008, 04:35 PM

How old is the fan? Sounds like it is pulling to many amps & no fuse to protect the system.

kratos2250 · October 18th, 2008, 05:12 PM

It's not that old, probably a year. Do I need a fuse and a relay or just a fuse.

fogged306 · October 18th, 2008, 05:31 PM

You need to put a relay in and switch the relay. You also need to put larger gauge wire in and a fuse. The reason you are burning up switches, is because the fan draws too much current for the switch. The reason you are burning up wires is because you are using too small of a wire. You're going to want to find out how many amps the fan draws because that will tell you what size wire and relay to use. If you can find that out, I can point you in the right direction.

1FUN4RD · October 18th, 2008, 06:23 PM

Originally Posted by fogged306

You need to put a relay in and switch the relay. You also need to put larger gauge wire in and a fuse. The reason you are burning up switches, is because the fan draws too much current for the switch. The reason you are burning up wires is because you are using too small of a wire. You're going to want to find out how many amps the fan draws because that will tell you what size wire and relay to use. If you can find that out, I can point you in the right direction.

trueblue01 · October 19th, 2008, 10:58 AM

Basic automotive electrical 101. Check the load (amp draw) of the accessory, determine if it is low enough to be wired directly through a switch (check switch rating). If not, use the proper relay (check rating). The relay is triggered by a light gauge wire and acts as a heavy duty switch. Always use the proper gauge wire and ALWAYS use a properly sized fuse or breaker. Don't just twist and tape wires together, this will result in a poor connection and cause resistance heating at the joint. Solder the joint or use stake-on connectors. Always secure the wires in a loom or at least wire tied to a non-abrasive attachment point(existing loom). I look at an average of 12 car fires a year that result from someone improperly wiring add ons.

superbean · October 19th, 2008, 11:38 AM

your running battery voltage into your cabin? not smart.

run a relay and up the guage of the wire.

too much resistance in the line.. shit will catch on fire.

1slo5.0 · October 19th, 2008, 03:19 PM

Originally Posted by kratos2250

I have a 95 gt and my electric fan wires are getting so hot they are melting together. I have the power wire running straight to the battery, and the ground running through a toggle switch inside on the console. I keep burning through toggle switches too. Anybody know what I'm doing wrong? Thanks

You don't have a relay, that is why it is melting the wires. Relays for everything!

kratos2250 · October 19th, 2008, 04:19 PM

do you put the relay on the pos side or the neg. ? and which should I run through the toggle switch?

1slo5.0 · October 19th, 2008, 05:14 PM

Originally Posted by kratos2250

do you put the relay on the pos side or the neg. ? and which should I run through the toggle switch?

Click

superbean · October 19th, 2008, 05:55 PM

Originally Posted by Darrell

Click

good stuff darrell!

October 18th, 2008, 03:44 PM	#1
kratos2250 Regular Join Date: Feb 2007 Posts: 135 iTrader: 0 reviews	electric fan wires overheating bad I have a 95 gt and my electric fan wires are getting so hot they are melting together. I have the power wire running straight to the battery, and the ground running through a toggle switch inside on the console. I keep burning through toggle switches too. Anybody know what I'm doing wrong? Thanks __________________ 2003 Black Cobra. 2.3 whipple JLT RAI Dragon t/b 60s BAP Mafia Xcal3 MAC LTs w/ORX-pipe Borla stingers Billetflow IRS brace Eibach springs 1989 GT AFM b-31 cam crane springs 6.3 pushrods elec. W/P/fan 3:73s Manual steering tri-ax Shorties-orh-flows

October 18th, 2008, 04:28 PM	#4
kratos2250 Regular Join Date: Feb 2007 Posts: 135 iTrader: 0 reviews	I tried it on the pos side and it heated up just as much. I'll try the relay thing and see if that helps. __________________ 2003 Black Cobra. 2.3 whipple JLT RAI Dragon t/b 60s BAP Mafia Xcal3 MAC LTs w/ORX-pipe Borla stingers Billetflow IRS brace Eibach springs 1989 GT AFM b-31 cam crane springs 6.3 pushrods elec. W/P/fan 3:73s Manual steering tri-ax Shorties-orh-flows

October 18th, 2008, 04:35 PM	#5
1FUN4RD MMs Ford Racing Nut Swinger 2007 MUSTANG GT Join Date: Feb 2008 Location: CENTRAL IOWA Posts: 4,367 iTrader: 3 reviews	How old is the fan? Sounds like it is pulling to many amps & no fuse to protect the system. __________________ www.1fun4rd.blogspot.com

October 18th, 2008, 05:12 PM	#6
kratos2250 Regular Join Date: Feb 2007 Posts: 135 iTrader: 0 reviews	It's not that old, probably a year. Do I need a fuse and a relay or just a fuse. __________________ 2003 Black Cobra. 2.3 whipple JLT RAI Dragon t/b 60s BAP Mafia Xcal3 MAC LTs w/ORX-pipe Borla stingers Billetflow IRS brace Eibach springs 1989 GT AFM b-31 cam crane springs 6.3 pushrods elec. W/P/fan 3:73s Manual steering tri-ax Shorties-orh-flows

October 19th, 2008, 10:58 AM	#9
trueblue01 Enthusiast 1989 Mustang LX 10.98@126.7 NA Join Date: Feb 2008 Location: N.E. Ohio Posts: 698 iTrader: 0 reviews	Basic automotive electrical 101. Check the load (amp draw) of the accessory, determine if it is low enough to be wired directly through a switch (check switch rating). If not, use the proper relay (check rating). The relay is triggered by a light gauge wire and acts as a heavy duty switch. Always use the proper gauge wire and ALWAYS use a properly sized fuse or breaker. Don't just twist and tape wires together, this will result in a poor connection and cause resistance heating at the joint. Solder the joint or use stake-on connectors. Always secure the wires in a loom or at least wire tied to a non-abrasive attachment point(existing loom). I look at an average of 12 car fires a year that result from someone improperly wiring add ons. __________________ Never fast enough.

October 18th, 2008, 03:58 PM	#2
gotn20 Atomized Join Date: Feb 2008 Posts: 1,370 iTrader: 0 reviews	you need to have it on a relay man it'll help a bunch.

October 18th, 2008, 03:59 PM	#3
viperlocc Regular 1985 Mustang GT Join Date: Oct 2008 Location: Stevens Point Posts: 316 iTrader: 0 reviews	When I hooked up things to a toggle switch i would put it on the pos. side, not the neg. side. run a straight good ground and put the toggle on the pos side and see what that does for ya

October 18th, 2008, 05:31 PM	#7
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	You need to put a relay in and switch the relay. You also need to put larger gauge wire in and a fuse. The reason you are burning up switches, is because the fan draws too much current for the switch. The reason you are burning up wires is because you are using too small of a wire. You're going to want to find out how many amps the fan draws because that will tell you what size wire and relay to use. If you can find that out, I can point you in the right direction.

October 19th, 2008, 11:38 AM	#10
superbean Hardcore Enthusiast 1998 Cobra 13.24@105.66 Join Date: Aug 2008 Location: North Carolina Posts: 1,778 iTrader: 0 reviews	your running battery voltage into your cabin? not smart. run a relay and up the guage of the wire. too much resistance in the line.. shit will catch on fire. __________________ weeee foooord!

October 19th, 2008, 04:19 PM	#12
kratos2250 Regular Join Date: Feb 2007 Posts: 135 iTrader: 0 reviews	do you put the relay on the pos side or the neg. ? and which should I run through the toggle switch? __________________ 2003 Black Cobra. 2.3 whipple JLT RAI Dragon t/b 60s BAP Mafia Xcal3 MAC LTs w/ORX-pipe Borla stingers Billetflow IRS brace Eibach springs 1989 GT AFM b-31 cam crane springs 6.3 pushrods elec. W/P/fan 3:73s Manual steering tri-ax Shorties-orh-flows

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