wiring setup

[curtisbyrne]

like i said before i have a fan on the exhaust side to suck hot air out. i bought a two prong switch! the fan has two wires which are + and -. so i joined them together and put those wires on one prong.then ran a wire from the remaining prong to the + post on the battery. but......... nothing happens

[garrett1308]

Assuming it's just a regular DC fan, run the + wire to the + battery terminal. Run the - fan wire to one switch prong, and a wire from ground or the - battery terminal to the other switch prong.

Electricity flows from one pole to the other (negative to positive from a physics standpoint, but it can be thought of as positive to negative.) As it flows, it can accomplish work, much like flowing water. Voltage is the determinant of how many and amperage is the determinant of how much. In a D.C. Motor (direct current), voltage sets the speed and amperage sets the torque. By means of a resistor, a device used to alter the voltage and amperage of an electrical current, one can alter the speed and torque. Resistors use the formula V=IR where voltage (v) = amperage (I) times resistance (R). By increasing or decreasing the resistance, also called ohms, you can increase or decrease power output and control things such as motor speed.

Didn't mean to go off on a tangent, but there's some basic electronics information for you

[curtisbyrne]

nice work garret seems you know what your talking about.
thanks!!

[curtisbyrne]

got it working thanks!

[Gman757]

I would wire that just the opposite. The positive + lead is always hot and you want to break that circuit at the switch. That way you have less chance of a dead fault ground downstream in the component past the switch.

You also need to put an inline fuse on all circuits that are individually wired to the battery as close to the positive + terminal as practical..

It's easier if you just put in a fused panel for all of your auxiliary add ons and then you can fuse them there with the proper size fuse and not have a bunch of individual wires and fuses connected to your battery terminals. I would use 10 gauge wire for an auxilliary panel

This is one I installed on my Scout.