For all your electrical needs... this site is pretty good.
http://www.the12volt.com/
wiring a fan with a relay? make it work so that you dont burn up wires and fuses with a relay...
thats what we did to qwikspool's sr- we took a 92 ford escort fan with 3 wires and used only 2 for the power and wired it to the relay and switch using this diagram :
Using a 30 amp SPDT relay, connect terminal #87 to constant 12 volts positive with a fuse rated to the sum of the additional accessories you've added and the components you need to turn on. (If you have two fans rated at 5 amps each and a neon light rated at 10 amps, you would use a 20 amp fuse plus 200 ma for each amplifier and processor.) Connect terminal #85 to ground, terminal #86 to the remote turn on wire from the head unit, and terminal #30 to each accessory with an appropriate fuse. A fuse (not shown) could also be used between the output of the relay (#30) and the remote turn on wire of the amplifiers and/or processors for extra precaution.
if the diagram doesnt show up just go to this page
http://www.the12volt.com/relays/page5.asp
and scroll down to
http://www.the12volt.com/relays/page5.asp#rtol
come test my gangsta......
