I want to run some small cooling fans for my amps. I was wondering if I could run them off of the remote wire, that way they will turn on with the amp. It would be just 1 amp total.

 

Most turn-on leads are for turning on a main relay in the amp, and so I wouldn't think that they are made to power things other than that (but I'm no turn-on lead guru). If I were you, I'd split it and have it turn on a relay that would power the cooling fans.

 

Remote the fans off a 12v relay....Do NOT run them off the REMOTE sense wire....IMHO you are asking for Trouble...Hense fans do not Pull alot of Current, however....the REMOTE sense wire don't have alot of Current to offer either.

However....If you use a Relay to supply your fans...Make sure to run a "EMF Killing Diode" a 1n2004 diode accross the Coil of the relay. This will stop any "EMF" from getting back into your other equipment...Without this Diode it may cause "Popping" when system is turned on & off and the relay engages, Hense causing damage to other equipment.


Just my .2 cents.... take it for what it is worth.

Corrected Error:

 

A 2N2004 is a transistor, not a diode. I think you meant 1N914 (I'll check on that number).
As has been said, use a relay off the 'Rem' lead back in the dash. Then you can have just the one wire run back that can handle the 'rem' for the amps and power the fans. Don't go pulling a crap load of current though. But with the small fans you'll be good.

 

Most head units can only handle about .5 amps of current draw on the remote line, so like others have said, use the relay.

 

Corrected Error. 2n = Transistor 1n= Diode... ANY small signal diode will work.

 

YOU WILL DEFINATLY NEED A RELAY FOR MORE THAN TWO ITEMS RUNNING OFF THE WIRE, I DID THIS IN MY CAR, THAT I HAD THREE AMPS, TWO FANS, A SMALL FUSE BLOCK, AND NEVER HAD AN ISSUE WITH THE HEAD UNIT, MY BUDDY TOLD ME WHAT TO DO AS HE DID MANY STEREO COMP CARS,CUSTOM AUDIO CONCEPTS