OK I put in an aftermarket fan and also put in a switch to it so i can put the fan on when i want to. Anyways, i seem to have a problem with the fan switches burning the male connectors on the switch. Does anyone have any ideas about what may be the problem. I hate having to buy a switch every few months.

Help
Syxx

 

Are you using the switch to activate a relay or are you powering the fan directly off the switch? Fans can pull as much as 20 Amps so you need a relay.

 

Like Hurtin4Hp say you need to get a switch rated at 20 to 30 amps. You can find these at PEP Boys or Radio Shack.
Also you want to put the switch, in series, on the ground side of of the fan. This is cause you need to go thru the fire wall, to the switch inside the car, and if the wire gets shorted in there (firewall) it will just turn on the fan on and not short you battery out(KABOOM!). This is just proper wiring for cars. Try to never bring a POSITIVE thru the firewall.
Good Luck!

 

If you do have the manual switch directy powering the fan motor (not powering the positive side of the fan relay coil), it must be a high amperage type (15 amps, or so) switch. If this is the case, the switch will be connected in parallel with the fan relay on the positive side of the fan motor.

Also, there are many wires going through the fire wall that are connected to +12 volts, and it is required, in many applications, to run +12 volt powered wires through the fire wall. The hole through the fire wall should have a grommet installed in it, or the wire should be protected with sleeving to prevent a short circuit to ground, and the wire should be fused at the power source, so that if a short occurs, the fuse will blow before the heat generated ignites a fire.

Tim