power could be alot of differnt colors..black is always groung.. if there is only 2 wires u can switch them to change the poliaritys and it will change which way the blade will spin.. just hook it up to a battery to see which way u want ti to spin..
electric fan install help
went to the junkyard today to find an electric fan, i found a newer, like late 99 or early to mid 2000 import with some really slim dual 10" system and figured those would work great, so here i got them home and pulled took off the plug in for the factory system, there were only 2 wires i figured easy, power and ground, black would be the ground, then there was a blue wire and now im confused as to weather that is poer or something else, wt can u guys add?
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relays are cheap and easy to use just go to home depot and get one..
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