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Q: Air condition wiring on 2002 Toyota Echo

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My air is not blowing cold air and I found a plug under the dash not connected to anything. I need to know where to plug it in. the wires are purple and pink
(1) Answer
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Under every dash there are some wires not connected unless the car has all the options and electric gadgets offered.
First check fuses Main fuse 40 Amp marked HTR, look at 10 amp fuse marked gauge, 7.5 amp fuse marked AC. I looked at a wiring diagram fpr your car there are no pink or purple wires in the AC circuit. Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online
Alldata is the easiest to follow for tests and instructions.