No problem,get two single pole double throw switches (or two double pole double throw ) NOT center OFF. Wire them with fused +12volts up to the bridge switch center or common. Two wires from either throw of the switch to either throw of the switch at the other station. (these are called travelers ) Then the switched +12 volts from the common or center of this switch to the blower or whatever the load is.Then other side of the load goes to the -12volt bus or however yours is set up. If I could draw on this I'd draw a picture and you would see it is very simple. Just realize the two switches work together in series, just like one big switch in the circuit. If you want to add one or more switches to these two ( have Three or more locations ) just put one or more 4-way switches in the middle between the two 3-way switches. You can find a three way switch at Home Depot or somewhere and it will have a diagram of how the wires are connected on the box. Very simple when you understand that the two three way switches work together to allways reverse the present state (on or off) every time you change either switch. If you can run the wires, connecting it all up is easy. Need more help just e-mail me. --Ed