i have a electrical short somewhere can somebody please tell us how to find it on 1998 Ford Windstar

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i windows, speakers, turn signals wont work. but the husband can run a wire from the battery to the window motor and it will work. his uncle said something about the turn signal knob could be bad. but he hooked up a toggle switch for the blower motor and it smoked and that is when everything started to quit working.
(2) Answers
If you're doing your own repairs GET a wing diagram and information of HOW the circuit(s) work before testing or running [expensive] jumper wires.Paying someone else could be cheaper than doing it yourself.
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