How to wire up these heated seats?
I'm competent, I'm planning on going to school to be an electrical engineer and do a lot of electrical/electronic projects on my own. But I just finished puting heated seat pads in my mom's 02 ford minivan and went out to wire it up. I took off the panel under the dashboard and ther's two or three bundles of probably around 30 wires and it's not easy to tell at all where they go. I have a multimeter but I don't want to go cutting up wires if I'm just guessing what it is. Plus it's below freezing outside so I don't wanna spend all day outside trying to trace where wires go. Is there an easy way to tell? Or a wiring diagram somewhere?
You're not competent if you were going to splice into an existing wire for seat heaters. They need their own power source from the battery, with an inline fuse.
Go buy a service manual for that vehicle. Do not tap into existing wires, use relays & fuses & run your own
Real engineers use a wiring diagram. Alldatadiy.com has them
Without a wiring diagram to see which circuit you would be tapping into, the easiest and best way is to hook up a fuse tap kit or add-on plug kit and run the power wire for the seat heaters to it for an existing fuse for a circuit that can handle the load of power needed for the heated seats… Use a circuit which would not matter if the fuse blew from the heaters drawing too much power that the circuit could not handle. Find a circuit fuse rated for 10-15 amp draw for something like power mirrors, rear defogger or rear wiper, etc. Or other accessory which would not be a problem if the fuse blows due to the extra load… Or choose a circuit which is not used when the heaters would be used. Remove the fuse and slide the add-on fuse tap unit in place or some kits have a small thin metal leg that slides under one leg of an existing fuse and then reinstall the fuse in place… Then connect the power wire to the fuse tap and ground the ground wire for the seat heaters as needed. Some fuse panels also have an unused accessory power tap spade terminal built into the fuse panel which you can attach wires to for an add-on accessory… Test any unused spade terminals in the fuse panel for power with ignition on or off to see if they are constant or switched power and just connect the power wire to the terminal with an appropriate sized in-line fuse holder and fuse and install an on-off switch in the new circuit wiring if the fuse panel spade terminal has constant power.
Various designs of fuse tap kits… Sold at parts stores or online sites for various size fuses…
http://www.amazon.com/...000CQDRTI/
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