Electric windows on my 1993 aerostar do not work consistently, I cannot find the system diagram I remember seeing in the manual. I traced the problem to a relay shared by both windows, but cannot recall it's location or the location of the diagram. Please help.

Blower motor is in dashboard. Problem could be with motor windings, bearings, fuse, relay, and switch. Check them all out.

Its easier if you get the $6 harness piece and attach it to the stereo harness and plug it in. Than to splice the wires on there. But here is the wiring color codes http://www.the12volt.com/installbay/stereodetail/795.html

Can you clarify a little better . does not crank ??? As when you turn the key to the start position nothing happens ? The starter does not engage an spin the engine ? Control module has nothing to do with that . Park neutral safety switch maybe, ignition switch possibly, main B+ cable from battery to the starter solenoid. If you would look at a wiring diagram to see what all is involved in the starting system on your vehicle an testing the starter electrical circuit's . Doing voltage drop testing on the starter main B+ circuit .. Starter Voltage Drop Don't keep changing out the starter , that is not it. Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. Year , make , model and engine size. Under system click engine ,then under subsystem click on starting . Click the search button then the blue link. Now look at the wiring diagram ,DO YOU SEE A CONTROL MODULE any where on that diagram ??????
You should learn how to diagnose be trying to fix cars.
Electric Testing Techniques You Need to Know

I suggest check each diagram, according woth your engine sizes (3.0L or 4.0L)...

Ford Aerostar 4.0 liter V-6 VIN "X"




Ford Aerostar 3.0 liter V-6 VIN "U"




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go to motorcraft.com, pro center, tech info.

Review the Repair Manual ZJ-Secc-8S-Power-Windows or the ZJ-Secc-23-Body-Components (page 15 / Doors).

I hope helped with this (remember rated this help) Good luck.

usaly the all run off same fuse and relay so most likely u will have to replace window motor

The doors locks and mirrors may be a blown fuse.

The window is simply a window lift motor that is either worn out and ready to go, or the tracks need cleaned and lubed...but most likely its the motor

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

YOU CAN FIND A PLACE CALL TRANS STAR TRANSMISSION PRODICTS THEY WILL SELL YOU A BOOK OR EBAY

https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

ford manual with diagrams

in pdf